How to Read an Aerosol SDS/MSDS: A Practical Guide for B2B Buyers

Why is the SDS important for B2B aerosol buyers?

The Safety Data Sheet (SDS, formerly MSDS) is the single most important document in aerosol trade. It determines:

• Whether your product can legally enter a target country • How it must be classified for dangerous goods transport (UN 1950) • What storage conditions your warehouse needs • What safety equipment your end-users require • Whether your product meets REACH, CLP, EPA, or CARB regulations

An incomplete or inaccurate SDS can result in customs rejection, fines, warehouse liability, or product recalls. As a buyer, you should review the SDS before placing any order — not after delivery.

What are the 16 sections of an SDS and which matter most?

GHS-format SDS documents follow a standardized 16-section structure. For B2B buyers, here's what to focus on:

Section 1 — Identification: Product name, supplier contact, recommended use. Verify the product name matches your order.

Section 2 — Hazard Identification: GHS hazard statements (H-codes) and pictograms. This is the most critical section — it tells you what risks the product carries.

Section 3 — Composition: Chemical ingredients and concentrations. Essential for REACH compliance in the EU — any SVHC (Substances of Very High Concern) above 0.1% must be declared.

Section 7 — Handling and Storage: Temperature limits, ventilation requirements, incompatibility warnings. Directly impacts your warehouse operations.

Section 9 — Physical and Chemical Properties: Flash point, boiling point, vapor pressure, aerosol classification. Flash point determines transport classification.

Section 10 — Stability and Reactivity: Conditions to avoid, hazardous decomposition products.

Section 14 — Transport Information: UN number, proper shipping name, hazard class, packing group. This is what your freight forwarder needs.

Section 15 — Regulatory Information: REACH, TSCA, CARB, and other market-specific regulations.

How do you verify transport classification from the SDS?

Section 14 (Transport Information) is where you find the dangerous goods classification:

• UN Number: For aerosol cans, this is always UN 1950 • Proper Shipping Name: AEROSOLS, FLAMMABLE • Hazard Class: 2.1 (flammable gas) or 2.2 (non-flammable, non-toxic) • Packing Group: Not applicable for Division 2.1 aerosols

If your SDS shows a different UN number or hazard class, that's a red flag — the formulation may have changed without proper documentation.

For sea freight (IMDG Code), aerosols must be packed in approved outer cartons with correct labeling. For air freight (IATA DGR), quantity limits per package apply — typically 75 kg net per UN specification packaging.

How do you check REACH compliance from the SDS?

REACH compliance is verified through Section 3 (Composition) and Section 15 (Regulatory Information):

1. Check Section 3 for any SVHC substances. If any chemical is listed above 0.1% w/w concentration, the supplier must notify ECHA and declare it to downstream users.

2. Check Section 15 for REACH registration numbers. A properly registered product will reference its REACH registration or exemption.

3. Check for CLP (Classification, Labelling and Packaging) hazard classification. EU Regulation 1272/2008 requires specific pictograms, signal words, and H-statements.

4. For aerosol propellants: verify the propellant gases (typically DME, LPG, or compressed air) are not restricted in your target market. Some HFC propellants face phase-down under EU F-gas regulations.

Always request the SDS in the language of your target market. REACH requires SDS to be available in the official language(s) of the Member State where the product is placed on the market.

What should you check in Section 2 (Hazard Identification)?

Section 2 tells you everything about the product's risk profile:

• GHS Pictograms: Flame (flammable), Health Hazard (carcinogen/sensitizer), Exclamation Mark (irritant), Gas Cylinder (compressed gas) • Signal Word: Danger (more severe) or Warning (less severe) • H-Statements: Specific hazard codes, e.g.: - H222: Aerosol; Flammable - H229: Pressurized container; may burst if heated - H319: Causes serious eye irritation - H336: May cause drowsiness or dizziness

As a buyer, cross-check the hazard classification with your target market's acceptance criteria. Some markets restrict certain H-statements (e.g., H340 mutagenic substances face strict limits in EU). If the SDS shows a hazard classification that doesn't match your market regulations, discuss reformulation options with your supplier before ordering.

What red flags should buyers watch for in an SDS?

When reviewing an SDS from a potential supplier, watch for these warning signs:

1. Missing or outdated revision date — GHS SDS must be reviewed and updated every 5 years (or sooner if the formulation changes). A SDS older than 5 years is non-compliant.

2. Generic composition — If Section 3 shows vague descriptions like "proprietary blend" without CAS numbers, the supplier may not have full control over their formulation.

3. Inconsistent transport classification — If Section 14 shows UN 1950 but Section 2 shows no flammability hazard, something is wrong.

4. Missing regulatory section — A SDS without Section 15 (Regulatory Information) is incomplete for international trade.

5. No language version for your market — REACH requires SDS in local languages. A supplier who only provides English SDS may not be ready for EU distribution.

A reputable manufacturer will provide complete, GHS-compliant SDS documents as a standard part of the quotation process. If they can't, consider it a serious qualification issue.