: : : : : : : : : : SULFUR : : : : : : : : : :
CAS No. : 7704-34-9
Quality standard: National Standard GB 2449-92
Molecular formula: S
Molecular weight: 2.06
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Norm of
consumption: |
Fluidization roasting process; Half-roll roasting method
Sulfur iron ore: (contains S35%) t/t =3.48 3.89
Anthracite t/t =1.10 1.24
Water m3/t =18 38
Electricity kW·h/t =250 435 |
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Use: In preparation of sulfuric acid, sulfides, vulcanized rubber, etc.
Packaging: Powdery or flaky sulfur is packaged in lined plastic woven bag or wood box. Net weight 25Kg or 50Kg. Lump or granular sulfur is packaged in gunny bag. Net weight 50Kg.
Properties: Light yellow crystals or powder. Very soluble in CS2; slightly soluble in ethanol and ether; insoluble in water. Ignites in air and burns to dioxide.
Industrial sulfur and test approach
Chemical symbol: S Technical requirements (%，m/m)
| Index name |
Premium Grade |
1st Grade |
Regular Grade |
| S ≥ |
99.90 |
99.50 |
99.00 |
| Water ≥ |
0.10 |
0.50 |
1.00 |
| Ash ≥ |
0.03 |
0.10 |
0.20 |
| Acidity(H2SO4) ≥ |
0.003 |
0.005 |
0.02 |
| Organic impurities ≥ |
0.03 |
0.30 |
0.80 |
| As ≥ |
0.0001 |
0.001 |
0.05 |
| Fe ≥ |
0.003 |
0.005 |
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Sieve residue
aperture 150μm ≤
aperture 75μm ≤ |
None
0.5 |
None
1.0 |
3.0
4.0 |
| Note: Sieve residue is only available for sulfur powder. |
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