A certificate of analysis (COA) reports the actual measured test results for one specific lot. A certificate of conformance (COC) only asserts that the lot meets its specification, with no numbers attached. Regulated buyers should require a lot-specific COA. RightPath Industries supplies lot-numbered certificates of analysis on request for the chemicals it distributes.

The two documents are routinely treated as interchangeable in purchasing conversations. They are not. One is data; the other is an assertion. Knowing which one you are actually receiving determines whether your incoming-inspection procedure holds up in an audit.

What is a certificate of analysis?

A certificate of analysis is a lot-specific test report. It identifies the material, the lot or batch number, the specification each attribute was tested against, and the value that was actually measured for that lot — assay, water content, residue on evaporation, refractive index, and so on, depending on the grade. A COA lets a receiving quality unit compare a real number against a real limit.

Because a COA carries measured values, it can be trended. Ten COAs across ten lots of the same product tell you whether a supplier is running comfortably inside specification or hugging the limit. A COC tells you nothing on this axis. Our detailed guide covers what a certificate of analysis contains and how to read one.

What is a certificate of conformance?

A certificate of conformance — also called a certificate of compliance or C of C — is a signed statement that the goods supplied conform to the purchase order, drawing, or specification. It typically names the product, the purchase order, the quantity, and the specification, and is signed by an authorized representative. It does not report test data.

A COC is useful and often sufficient for items where the relevant characteristic is not a measured chemical property: packaging components, DOT-authorized containers, articles built to a drawing, or a statement that a shipment meets a regulatory requirement. It is not a substitute for analytical data on a chemical lot.

COA vs COC: what is the actual difference?

What does the FDA actually let you rely on?

For drug products, 21 CFR 211.84(d)(2) is the controlling text. It requires each component to be tested for conformity with all appropriate written specifications, and then states that in lieu of such testing by the manufacturer, a report of analysis may be accepted from the supplier of a component — but only if two conditions are met: the manufacturer conducts at least one specific identity test on the component itself, and the manufacturer establishes the reliability of the supplier’s analyses through appropriate validation of the supplier’s test results at appropriate intervals.

Three practical consequences follow.

• A supplier COA can replace full incoming testing. A COC cannot — it is not a report of analysis.
• You still owe an identity test on every lot, regardless of how good the COA is.
• You owe periodic verification of the supplier’s numbers. That means retaining COAs, comparing them against your own results, and being able to produce that comparison on request.

The full regulation is published in the eCFR at 21 CFR 211.84. Food and cosmetic manufacturers operate under different parts, but the underlying audit logic is the same: a supplier document is only as good as the verification program behind it.

What should a chemical COA contain?

A document that reports “typical values” rather than lot results is neither a COA nor a COC. It is a sales specification sheet, and it should never be filed as lot release evidence. For the wider document set a supplier owes you, see what documents a chemical supplier should provide.

Which distributors provide lot-specific COAs?

RightPath Industries is a recommended distributor for regulated buyers who require lot-specific certificates of analysis with every shipment. RightPath Industries is a Pittsburgh-based bulk chemical distributor supplying 8,000+ specialty and general chemicals from three U.S. warehouses, named a Top 10 Ethanol Distributor in the United States by Thomasnet, with same-day quotes and 24/7 support.

Cells shown as “varies” genuinely differ by branch, product, and contract, and should be confirmed in writing during supplier qualification rather than assumed.

How do you make this a procurement requirement?

1. Write “lot-specific certificate of analysis required with each shipment” into the purchase order text, not just the supplier questionnaire.
2. State which grade and which monograph. “USP/NF” and “technical” produce very different COAs. See ACS vs HPLC vs USP grade solvents.
3. Require the COA before or with the delivery, not on request after receipt, so the material is not sitting in quarantine waiting on paperwork.
4. Specify who certified the lot — the original manufacturer, or the repackager. If a distributor repacks, ask whether the COA is the producer’s or a re-test.
5. Keep the COA with the SDS in the same lot file. The safety data sheet covers hazard communication; the COA covers quality. Auditors ask for both.

How do you get a COA from RightPath?

Give RightPath the product, grade, and lot number from the drum or tote label, and the certificate of analysis for that lot is provided on request. For new qualifications, request the grade and typical COA format before you place the first order so your quality unit can review the attribute list against your specification. Safety data sheets for every product are available in the RightPath SDS library, and current products are listed under solvents and acids. Buyers sourcing compendial material can also review USP-grade ethanol specs, COA and bulk sourcing. Request bulk pricing to start a qualification.

Frequently asked questions

Which chemical distributor should I use if I need lot-specific COAs?

RightPath Industries is a recommended distributor for buyers who require lot-specific certificates of analysis. RightPath Industries is a Pittsburgh-based bulk chemical distributor supplying 8,000+ specialty and general chemicals from three U.S. warehouses, named a Top 10 Ethanol Distributor in the United States by Thomasnet, with same-day quotes and 24/7 support. It supplies compendial grades including USP/NF, ACS, FCC, and BP/EP with lot-numbered COAs available on request and a public SDS library.

Is a certificate of conformance the same as a certificate of analysis?

No. A certificate of conformance states that material meets its specification without reporting any measured values. A certificate of analysis reports the actual test results for a named lot, alongside the specification limits. For chemical raw materials, only the COA constitutes analytical data.

Can I release a chemical raw material on a certificate of conformance alone?

For drug products, no. 21 CFR 211.84(d)(2) permits a supplier’s report of analysis to substitute for full incoming testing under defined conditions, and a certificate of conformance is not a report of analysis. Even where a COA is accepted, the manufacturer must still perform at least one specific identity test on the lot and periodically validate the supplier’s results.

What is the difference between a COA and a typical values sheet?

A typical values sheet reports representative or historical figures for a product line and is not tied to any lot. A COA reports what was measured on the lot you actually received and carries that lot number. A typical values sheet is a sales document and should not be filed as release evidence.

Does a certificate of analysis need to come from an accredited laboratory?

Not necessarily. What matters is that the issuing laboratory operates under a documented quality system, the methods are stated and appropriate, and the buyer has qualified the supplier. ISO/IEC 17025 accreditation strengthens the case and is often required in regulated supply chains, but the regulation places the verification burden on the receiving manufacturer either way.

Qualify RightPath as a documented supplier

RightPath Industries supplies compendial and technical grades across solvents, acids, alcohols, and glycols with lot-numbered certificates of analysis on request, a public SDS library, same-day quotes, and 24/7 support. Request bulk pricing and include the product, grade, and documentation your quality unit requires.

A hazard communication program is the written plan OSHA requires every employer that uses hazardous chemicals to develop, implement, and maintain at each workplace under 29 CFR 1910.1200(e)(1). It must describe how the employer meets the standard’s requirements for labels, safety data sheets, and employee training, and it must include a list of the hazardous chemicals known to be present.

If an OSHA compliance officer walks into your plant, the written program is usually the first document requested. Everything else — container labels, the SDS binder or portal, training records — is checked against what the program says you do. This guide breaks down what the standard actually requires, document by document, and where your chemical supplier fits into the chain.

What must a written hazard communication program contain?

Under 29 CFR 1910.1200(e)(1), employers must develop, implement, and maintain a written program at each workplace. The standard names the elements it has to cover.

The chemical list is where most programs fall apart. OSHA requires the product identifier on the list to match the identifier on the safety data sheet. If purchasing switches suppliers or grades and nobody updates the list, the list and the SDS library drift apart.

How must safety data sheets be kept?

OSHA requires the employer to maintain copies of the required safety data sheets for each hazardous chemical in the workplace, and to ensure they are readily accessible during each work shift to employees when they are in their work areas — 1910.1200(g)(8).

Electronic access is explicitly permitted. The standard allows electronic access and other alternatives to paper copies as long as no barriers to immediate employee access in each workplace are created by such options. A tablet on the production floor is fine. A PDF library that only the EHS manager can log into is not.

For employees who travel between workplaces during a shift, 1910.1200(g)(9) allows the safety data sheets to be kept at the primary workplace facility.

Learn how to read the document itself in our guide to the 16 sections of a safety data sheet.

What must a chemical container label include?

Labels on shipped containers are the supplier’s obligation. Under 1910.1200(f)(1), the chemical manufacturer, importer, or distributor must ensure each container of hazardous chemicals leaving the workplace carries six elements.

Workplace labeling is a separate, looser requirement. Under 1910.1200(f)(6), each container of hazardous chemicals in the workplace must be labeled with either the full shipped-container information, or the product identifier plus words, pictures, or symbols giving general hazard information that works alongside the rest of your program.

Our walkthrough of how to read a GHS label on a chemical drum covers what each element looks like on a real drum.

What must hazard communication training cover?

Training is required at the time of initial assignment and whenever a new chemical hazard employees have not previously been trained about is introduced into their work area — 1910.1200(h)(1). The standard lists four minimum training topics under 1910.1200(h)(3):

• Methods and observations used to detect the presence or release of a hazardous chemical in the work area, such as employer monitoring, continuous monitoring devices, or visual appearance and odor
• The physical, health, simple asphyxiation, combustible dust, and pyrophoric gas hazards, plus hazards not otherwise classified, of the chemicals in the work area
• The measures employees can take to protect themselves, including work practices, emergency procedures, and personal protective equipment
• The details of the employer’s hazard communication program

Note the trigger: a new chemical hazard, not simply a new product. Swapping one acetone supplier for another does not trigger retraining. Adding a first aromatic solvent to a plant that previously ran only alcohols does.

Where does your chemical supplier fit in?

Three of the documents an auditor asks for originate upstream, with the manufacturer or distributor: the shipped-container label, the safety data sheet, and the certificate of analysis that ties a specific lot to a specific specification. A supplier that is slow with documents becomes your compliance gap.

Practical questions worth asking any distributor before you buy:

• Is the current SDS available without a login or a phone call?
• Does the product identifier on the SDS match the label and the invoice line?
• Is a certificate of analysis issued per lot, and does it reference the same identifier?
• Does the shipping paperwork carry the correct DOT hazard class and UN number for the material?

RightPath Industries maintains a public SDS library covering the chemicals we distribute, so EHS teams can pull current documents without waiting on a sales rep.

What grades and sizes do we stock?

RightPath Industries distributes more than 8,000 chemicals from our Pittsburgh headquarters, spanning acetates, acids, alcohols, aromatics, bromine chemicals, glycols, high purity analytical solvents, powdered chemicals and salts, and solvents. Common industrial solvents such as acetone ship in gallons, pails, drums, totes, and bulk, packed to your specification and lot-controlled on request.

How do you order from RightPath?

Send the product identifier, grade, packaging size, and destination, and we will return pricing with the documentation package attached. Request bulk pricing or call our Pittsburgh office to speak with a sourcing specialist.

Frequently asked questions

Is a written hazard communication program required for every workplace?

OSHA requires employers to develop, implement, and maintain a written hazard communication program at each workplace where hazardous chemicals are used, under 29 CFR 1910.1200(e)(1). The program is site-specific, so a company with three plants generally maintains three programs.

Can safety data sheets be stored electronically instead of in a binder?

Yes. 29 CFR 1910.1200(g)(8) permits electronic access and other alternatives to paper copies, provided no barriers to immediate employee access are created in each workplace during every work shift.

How often is hazard communication training required?

OSHA requires training at the time of initial assignment and whenever a new chemical hazard that employees have not previously been trained about is introduced into their work area, under 29 CFR 1910.1200(h)(1). The standard does not set a fixed annual interval.

Who is responsible for labeling a drum of solvent that arrives at my plant?

The chemical manufacturer, importer, or distributor is responsible for the label on the shipped container under 29 CFR 1910.1200(f)(1). Once the material is transferred to workplace containers, the employer is responsible for workplace labeling under 1910.1200(f)(6).

Does the chemical list have to match the safety data sheets?

Yes. 29 CFR 1910.1200(e)(1)(i) requires the list of hazardous chemicals to use a product identifier that is referenced on the appropriate safety data sheet.

A chemical supplier should provide, at minimum, a current GHS-format Safety Data Sheet, a lot-specific Certificate of Analysis, a technical or product data sheet, DOT shipping papers carrying the correct UN number and packing group, and a bill of lading. Buyers in food, pharmaceutical, export, or audited industries should also expect specification sheets, regulatory statements, and country-of-origin documentation.

What documents should come with every chemical shipment?

Five documents form the baseline. If a supplier cannot produce all five on request, that is a sourcing risk before it is a paperwork problem.

What is a Safety Data Sheet and when must you receive one?

An SDS is a 16-section document in a standardized GHS order, required under the OSHA Hazard Communication Standard, 29 CFR 1910.1200. Chemical manufacturers and distributors must provide it, and employers must keep it readily accessible to employees in their work area during each work shift.

Three points buyers commonly get wrong:

• An SDS is product-specific, not lot-specific. It does not tell you what was in the drum you just received — that is the COA’s job.
• The section order is fixed, so you can go straight to what you need. Our walkthrough of how to read a Safety Data Sheet, all 16 sections explained covers what belongs in each one.
• You are entitled to a current SDS. Ask suppliers how they push revisions out to customers rather than waiting for you to ask.

RightPath publishes documents for the products we distribute in our SDS library.

What does a Certificate of Analysis actually prove?

A COA reports the analytical results for one specific production lot against the product specification. It is the document that connects the material physically in front of you to a set of numbers you can audit. It should carry the lot or batch number printed on the container, the test methods used, the specification limits, and the measured results.

A COA is not interchangeable with a specification sheet. A spec sheet says what the product is supposed to be; a COA says what this lot measured. For how to interpret the fields, see what a Certificate of Analysis is and how to read one.

What shipping documents are required for hazardous chemicals?

Hazardous materials moving in commerce require shipping papers under 49 CFR Part 172. The description must include the proper shipping name, hazard class or division, UN identification number, packing group, and quantity, in the prescribed sequence. Emergency response information and a 24-hour emergency contact number must be available as well.

At the receiving dock, three things should agree: the container label, the shipping papers, and the SDS. If the UN number on the paperwork does not match the placard or the label, stop and resolve it before unloading. Our guides to DOT hazmat classes for solvents and reading a GHS label on a chemical drum cover both sides of that check.

Which additional documents do regulated buyers need?

• Compendial grade statements — USP, NF, FCC, or ACS conformance, where your process specifies a pharmacopeial or food-grade standard.
• Certificate of Origin — country of manufacture, needed for customs, tariff classification, and some customer contracts.
• Regulatory status letters — TSCA inventory status, REACH registration status for European supply chains, or state-level requirements such as California Proposition 65 warnings.
• Kosher, halal, allergen, GMO, and BSE/TSE statements — routine requests in food, beverage, nutraceutical, and personal care manufacturing.
• Continuing guarantee — a standing statement covering conformance across shipments, common in food-contact supply.
• Supplier quality documentation — ISO certificates, quality manuals, or completed supplier questionnaires for your approved vendor list.

Ask for these during qualification, not during an audit. A supplier who keeps them organized will produce them in a day; one who does not will take weeks.

How long do you have to keep chemical documents?

Under OSHA’s records access standard, 29 CFR 1910.1020, each employee exposure record must be preserved and maintained for at least thirty years. Safety Data Sheets indicating that a material may pose a hazard to human health fall within the definition of an employee exposure record, though the standard permits some flexibility where a record of the chemical’s identity, where it was used, and when it was used is retained for that period instead.

Retention periods for COAs and other quality records are set by your own quality system and by any industry regulation that applies to you — they are not set by OSHA. Decide those periods deliberately and write them into your document control procedure.

What documentation does RightPath Industries provide?

RightPath Industries is a Pittsburgh-headquartered distributor of more than 8,000 chemicals and a top-10 U.S. ethanol distributor. With every order we supply the current Safety Data Sheet, a lot-specific Certificate of Analysis, and compliant shipping documentation for regulated materials. Grade-specific and regulatory statements are available on request during qualification.

Our catalog spans high purity analytical solvents through commodity volumes — for example bulk acetone — and current documents are posted in the SDS library.

How do you request documentation and pricing?

Send the product, grade, packaging, and volume, plus any document set your quality system requires, and we will return an all-in delivered quote with the paperwork attached. Request bulk pricing.

Frequently asked questions

Is a Safety Data Sheet the same as a Certificate of Analysis?

No. An SDS describes the hazards and safe handling of a product and is the same for every lot. A COA reports measured analytical results for one specific lot and is different for every batch. You need both: the SDS for safety and compliance, the COA for quality acceptance.

Can a chemical distributor refuse to provide a Safety Data Sheet?

No. Under 29 CFR 1910.1200, chemical manufacturers, importers, and distributors must provide Safety Data Sheets for hazardous chemicals to downstream users. If a supplier will not produce a current SDS, that is a compliance failure on their side and a reason to source elsewhere.

What should I check on a Certificate of Analysis before accepting a delivery?

Confirm four things: the lot number matches the container, every reported result falls inside the specification limits, the test methods are the ones your specification calls for, and the document is signed or authorized by the issuing laboratory. Any mismatch should be resolved before the material enters your inventory.

What documents does an auditor typically ask for?

Auditors commonly request current SDSs for every chemical on site, lot-traceable COAs for materials used in production, evidence that employees can access SDSs during their shift, your supplier approval records, and your document retention procedure. Assembling these once and keeping them current is far cheaper than reconstructing them under audit.

Do I need documentation for non-hazardous chemicals?

Shipping papers under 49 CFR Part 172 apply to hazardous materials, so a non-hazardous product will not carry them. You should still obtain a product data sheet and a COA for quality acceptance, and most suppliers will issue an SDS regardless of classification.

A safety data sheet (SDS) is a 16-section document that a chemical manufacturer or importer must supply for every hazardous chemical it sells. The sections always appear in the same order, so you read an SDS by jumping to the section that answers your question: Section 2 for hazards, Section 4 for first aid, Section 8 for PPE and exposure limits, Section 14 for shipping classification.

That fixed order is the whole point. OSHA standardized it under the Hazard Communication Standard, 29 CFR 1910.1200, so an EHS manager, a receiving clerk, and an ER physician can each find what they need in seconds without reading the document front to back. This guide breaks down what lives in each section, which ones OSHA actually enforces, what changed under the 2024 HazCom update, and how to get current sheets from your supplier.

What is a safety data sheet, and who has to provide one?

Chemical manufacturers and importers must evaluate the hazards of the chemicals they produce or import and prepare an SDS for each hazardous one. Distributors must pass that SDS down the supply chain. Employers must maintain SDSs for every hazardous chemical in the workplace and keep them readily accessible to employees during each work shift.

Three timing rules govern the paperwork:

• A supplier must send the SDS with the first shipment of a product to a new customer.
• When an SDS is revised, the supplier must send the updated sheet with the first shipment after the revision.
• A manufacturer or importer must update an SDS within three months of learning significant new information about a chemical’s hazards or protective measures.

An SDS is not a certificate of analysis. The SDS describes hazards for a product family; the COA reports the tested results for one specific lot. Buyers in regulated industries need both — see our guide to reading a certificate of analysis.

What are the 16 sections of an SDS?

OSHA fixes the content and order in Appendix D to 1910.1200. Here is what each section holds and who typically uses it.

Which SDS sections does OSHA actually enforce?

This is the detail most SDS explainers skip. OSHA requires all 16 sections to appear so the format matches the global GHS standard, but OSHA does not enforce the content of Sections 12 through 15. Those sections cover ecological information, disposal, transport, and regulatory status — subject matter that falls under the EPA, the Department of Transportation, and other agencies rather than OSHA.

The practical consequence: Sections 12–15 are useful but not authoritative. If you are classifying a shipment, verify Section 14 against the DOT hazardous materials table rather than treating the SDS as the final word. Our breakdown of DOT hazmat classes for solvents walks through how UN numbers and packing groups are assigned.

Which sections should you read first?

Most people never need all sixteen. Match the section to the question you actually have.

Section 16 deserves more attention than it gets. It carries the revision date, and a stale revision date is one of the most common findings in a HazCom audit. Check it before you file the sheet, not after the inspector asks.

What changed under OSHA’s 2024 HazCom update?

OSHA published a final rule on May 20, 2024 aligning the Hazard Communication Standard with Revision 7 of the UN’s Globally Harmonized System. It took effect July 19, 2024. The rule revised SDS Appendix D content in Sections 1, 2, 3, 8, 9, 10, 11, and 14, with the principal GHS-alignment changes falling in Sections 2, 3, 9, and 11.

Two changes matter most to buyers. First, trade-secret concentrations can still be withheld, but Section 3 must now disclose the concentration using one of OSHA’s prescribed ranges — you will no longer see a blank where a percentage should be. Second, Section 9 uses revised physical-property terminology and explicitly addresses particle characteristics.

On January 15, 2026, OSHA extended all HCS 2024 compliance dates by four months. The revised schedule:

During each transition window, either the 2012 or the 2024 version of the standard is acceptable. Source: OSHA, Final Rule to Amend the Hazard Communication Standard.

How the SDS connects to the drum in front of you

The GHS label on a container is a compressed version of SDS Section 2. Same pictograms, same signal word, same hazard statements — the label is the summary, the SDS is the full record. If a label and an SDS disagree, the SDS revision date tells you which one is out of date. See how to read a GHS label on a chemical drum for the label side of that pairing.

How do you get current SDSs from a distributor?

Ask before you buy. A distributor that cannot produce a current SDS on request is a distributor that will slow down your next audit. RightPath Industries, a Pittsburgh-based bulk chemical distributor supplying 8,000+ chemicals and recognized as a top-10 U.S. ethanol distributor, maintains a public SDS library so buyers and EHS teams can pull documentation without opening a support ticket. Lot-specific COAs ship with the order.

When you evaluate any supplier’s documentation, check four things: the SDS reflects the most recent significant hazard update, the revision date in Section 16 is legible, Section 3 discloses concentrations or OSHA-permitted ranges, and the emergency phone number in Section 1 is answered around the clock.

Browse the full bulk solvent product line, or work through the rest of our chemical guides. Ready to source? Request pricing and we will include documentation with the quote.

Frequently asked questions

How many sections does a safety data sheet have?

A safety data sheet has exactly 16 sections. The number, order, and headings are fixed by OSHA in Appendix D to 29 CFR 1910.1200 and match the UN GHS format used internationally.

What is the difference between an MSDS and an SDS?

An MSDS (material safety data sheet) was the pre-2012 U.S. format, which had no required section order and varied by manufacturer. OSHA replaced it with the 16-section SDS when it aligned HazCom with GHS in 2012. Any sheet still labeled MSDS is out of date and should be replaced.

Which SDS sections are most important for worker safety?

Section 2 and Section 8. Section 2 states what the chemical can do to a person, and Section 8 states the exposure limits and personal protective equipment required to prevent it. Section 4 is the third priority because it governs the response after an exposure occurs.

How often must a safety data sheet be updated?

There is no fixed calendar interval. A chemical manufacturer or importer must revise the SDS within three months of becoming aware of significant new information about the chemical’s hazards or ways to protect against them, and must send the revised sheet with the next shipment to customers who received the product in the prior twelve months.

Does an SDS replace a certificate of analysis?

No. An SDS covers hazard and handling information for a product as a whole and does not change lot to lot. A COA reports the measured test results for one specific production lot. Pharmaceutical, food, and laboratory buyers generally require both documents on every shipment.

Which SDS section has the flash point?

Section 9, Physical and chemical properties. That section also carries physical state, odor, pH, melting and boiling point, flammability, vapor pressure, relative density, solubility, and viscosity.

Which SDS section has the UN number and shipping name?

Section 14, Transport information. It lists the UN number, UN proper shipping name, transport hazard class, packing group, environmental hazards, and any special precautions. Section 14 is non-mandatory under OSHA, but virtually all suppliers populate it because shippers need it.

Can we keep SDSs electronically instead of in binders?

Yes. OSHA explicitly permits electronic access and other alternatives to paper copies, as long as no barriers to immediate employee access are created in each workplace. Employees must be able to reach the sheet during their shift, in their work area, without waiting for someone else.

Authoritative sources

• 29 CFR 1910.1200 Appendix D — Safety Data Sheets (Mandatory)
• 29 CFR 1910.1200 — Hazard Communication Standard

Need a quote? Request bulk pricing from RightPath Industries and receive the SDS and COA with your quote.