Molekula
Antimony(III) sulfide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Antimony(III) sulfide is a yellow to orange solid used in flame retardants, pigments, and semiconductor applications. It is also used in matches, pyrotechnics and percussion caps, in making ruby glass, and as a starting material for antimony metal and other antimony compounds. It has a molecular formula of S₃Sb₂, a molecular weight of 339.7 g/mol, and is stable at ambient storage conditions. Listed under CAS 1345-04-6, it carries a warning signal word due to its toxicity. Molekula supplies Antimony(III) sulfide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | dark grey to black powder or crystals |
| Acidity | ≤0.01% |
| Insoluble Matter | ≤1.0% |
| Particle Size | (140 mesh) 30-50% (200 mesh) 20-30% |
| Humidity | ≤0.2% |
| Iron (Fe) | ≤0.5% |
| Lead (Pb) | ≤0.15% |
| Arsenic (As) | ≤0.06% |
| Antimony (Sb) | ≥70.5% |
| Sulphur (S) | (Free) ≤0.2% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Gray-black orthogonal crystals |
| Melting Point | 550 °C |
| Density | 4.562 g/cm³ at 25 °C |
| Water Solubility | Insoluble in water |
| Solubility (other solvents) | Soluble in concentrated hydrochloric acid |
Source: PubChem CID 16685273 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90033273 |
| CAS Number | 1345-04-6 |
| IUPAC Name | sulfanylidene(sulfanylidenestibanylsulfanyl)stibane |
| EC Number | 215-713-4 |
| Molecular Formula | S3Sb2 |
| Molecular Weight | 339.7 |
| Exact Mass | 339.7242 |
| SMILES | S=[Sb]S[Sb]=S |
| InChIKey | IHBMMJGTJFPEQY-UHFFFAOYSA-N |
| InChI | InChI=1S/3S.2Sb |
| PubChem CID | 16685273 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2830.90.9000 |
| Tariff Code | 2830901100 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H332 Harmful if inhaled
- H351 Suspected of causing cancer
- H373 May cause damage to organs through prolonged or repeated exposure
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P391 Collect spillage
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Antimonous sulfide
- Antimony Orange
- Antimony sesquisulfide
- Antimony sulfide (Sb2S3)
- Antimony trisulfide colloid
- Antimony vermilion
- Black antimony
- Crimson antimony
- Diantimony trisulfide
- Needle antimony
Frequently asked questions
What is Antimony(III) sulfide used for?
It is primarily used in the production of flame-retardant materials and as a pigment in ceramics and glass.
What is the chemical formula and molecular weight of Antimony(III) sulfide?
The formula is S3Sb2 and the molecular weight is 339.7 g/mol.
How should Antimony(III) sulfide be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of Antimony(III) sulfide does Molekula supply?
Molekula supplies Antimony(III) sulfide in technical grade.
Can Molekula supply Antimony(III) sulfide in bulk?
Yes, Molekula can supply Antimony(III) sulfide in bulk quantities upon request.
What documentation comes with an order of Antimony(III) sulfide?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.