Safety data sheet reference · CAS 7704-34-9
Sulfur SDS
also: sulfur MSDS · safety data sheet · CAS 7704-34-9 · EC 231-722-6 · sulphur · brimstone
Official PDF from supplier
This page is a reference, not the legal document.
CAS number
7704-34-9
EC number
231-722-6
CLP Annex VI index
016-094-00-1
Molecular formula
S
Molar mass
32.07 g/mol
§ 02 · Hazards identification
Harmonised EU classification
CLP Annex VI · Index 016-094-00-1. A supplier SDS may add self-classified hazards — this is the legal minimum.
Precautionary statements
§ 07 · Handling and storage
Computed storage verdict
Derived from CLP Annex VI classification and CAMEO reactive-group data — not copied from a PDF.
⚠ Highly Flammable⚠ Strong Reducing Agent
Full interactive verdict — reactions, gas release on contact, ADR forms →
§ 09 · Physical and chemical properties
Measured properties
Fire-relevant values first — flash point and explosion limits decide the storage and ventilation regime.
Flash point
207.2 °C
Autoignition
232.2 °C
Source: CAMEO Chemicals (NOAA, public domain); per-value source references stored in the database.
§ 10 · Stability and reactivity
Reactive group (CAMEO/NOAA): Reducing Agents, Strong. Our database documents 39 incompatible and 9 caution reaction-partner groups for sulfur — including which combinations release gas on contact. See the per-partner breakdown with gas release →
39
Incompatible
9
Caution
§ 11 · Toxicological information
Acute toxicity estimates
| Route | ATE value |
|---|---|
| Oral (mg/kg bw) | 1 |
| Dermal (mg/kg bw) | No data |
| Inhalation, gas (ppmV, 4 h) | No data |
| Inhalation, vapour (mg/L, 4 h) | No data |
| Inhalation, dust / mist (mg/L, 4 h) | No data |
Acute Toxicity Estimates (ATE) are regulatory values used for classification under CLP and OSHA HCS Appendix A — not a measure of "safe dose". Empty routes render as "No data", never as a numeric zero.
§ 13 · Disposal considerations
Dispose of waste and residues in accordance with local and national regulations — in the EU under the Waste Framework Directive 2008/98/EC. Never discharge to drains or municipal waste; hand contaminated packaging and unused product to an authorised waste-disposal company. The supplier's SDS section 13 lists the applicable waste codes for the specific product.
MSDS vs SDS
MSDS vs SDS: is there a difference?
MSDS (Material Safety Data Sheet) is the older name for the same document. In the US, OSHA's Hazard Communication Standard (2012) adopted the GHS-standardised 16-section Safety Data Sheet; in the EU the format is set by REACH Annex II. So a "sulfur MSDS" and a "sulfur SDS" refer to the same document — today it is issued as an SDS. Full breakdown of the differences →
Compliance hub
From classification to SDS
The classification above corresponds to Section 2 of a Safety Data Sheet. Learn how a compliant 16-section SDS is structured and authored →
GHS label maker
Build the label for sulfur
Pictograms, signal word and H-statements combined into a compliant label layout →
§ 16 · Sources
- Classification: Regulation (EC) No 1272/2008 (CLP), Annex VI
- Transport: UN ADR 2025 (UNECE), Table A
- Reactivity: NOAA CAMEO Chemicals reactive-group matrix (public domain)
- Physical properties: CAMEO Chemicals (NOAA, public domain) — per-value source references stored in the database
- Substance data: PubChem · ECHA
Reference aid only. This page summarises the harmonised EU classification and computed storage guidance — it is not a Safety Data Sheet and does not replace one. Always verify hazards, handling and storage against the supplier's SDS (sections 7 and 10) and local regulations before use. Page updated 2026-07-27.
Frequently asked questions
Is an MSDS the same as an SDS?
In practice, yes. MSDS (Material Safety Data Sheet) is the older name for the same document. In the US, OSHA's Hazard Communication Standard (2012) adopted the GHS-standardised 16-section Safety Data Sheet; in the EU the SDS format is set by REACH Annex II. A document you find labelled "sulfur MSDS" is today issued as an SDS.
What GHS pictograms does sulfur require?
Under the harmonised EU classification (CLP Annex VI), sulfur carries GHS07 with the signal word "Warning". Hazard statements: H315. A supplier's SDS may add self-classified hazards on top of this harmonised minimum.
Where can I download an official sulfur SDS PDF?
From your own supplier — an SDS is issued per product and supplier, so the correct PDF for an inspection is the one matching the product you actually purchased. The supplier links on this page lead to the official SDS libraries of major distributors.