Sulfur and sulfuric acid
Powder / Crushed Sulfur 99.5% — Sized Feedstock for Acid Plants
FOB Black Sea / MENA · CFR/CIF worldwide on request
Key parameters — Powder / Crushed Sulfur 99.5%
Full specification — Powder / Crushed Sulfur 99.5%
| Sulfur (S) | 99.5% min |
| Ash | 0.05% max |
| Moisture | 0.2% max |
| Acidity (as H2SO4) | 0.003% max |
| Organic matter | 0.03% max |
| Chlorides | 50 ppm max |
| Arsenic | 1 ppm max |
| Particle size | 0–5 mm (powder / crushed) |
| Appearance | Bright yellow crystalline solid |
| Bulk density | 1.2–1.4 t/m³ (loose) |
| HS code | 2503.00 |
Product overview — Powder / Crushed Sulfur 99.5%
Powder and crushed sulfur is elemental sulfur (S8) milled or screened to 0–5 mm particle size for direct feed into contact-process sulfuric acid plants, rubber vulcanization lines, agricultural soil amendment programs and specialty chemical synthesis. Unlike lump sulfur that requires on-site crushing, sized powder grade arrives ready for pneumatic conveying into burners and reaction furnaces — reducing handling losses and dust generation at the receiver's terminal.
Our export grade carries 99.5% sulfur minimum with ash capped at 0.05% and moisture at 0.2% — parameters that protect acid plant catalyst beds from poisoning and keep pneumatic transport systems free of caking. Bright yellow crystalline appearance confirms low organic contamination typical of Claus-process recovery units at oil refineries and natural gas processing plants. Origins include Black Sea, Caspian and Middle Eastern production hubs with established bulk sulfur jetties and covered storage.
Typical buyers are integrated sulfuric acid producers securing merchant sulfur cover, phosphate fertilizer complexes feeding wet-process acid circuits, rubber manufacturers blending accelerator packages, and agricultural distributors supplying micronutrient programs on alkaline soils. HS code 2503.00.
Full product details
Loading ports & logistics — Powder / Crushed Sulfur 99.5%
Contract MOQ 1,000 MT for FOB assembly at dedicated sulfur jetties on the Black Sea, Caspian and Arabian Gulf — milled 0–5 mm powder in covered holds from 3,000 MT on handysize tonnage. Buyers without bulk berth infrastructure take 500–1,000 MT in 1-tonne FIBC containers stuffed at origin terminals.
CFR and CIF quotes include vessel or container freight, marine insurance and discharge-port compatibility check before firm offer. Typical lead time 14–28 days from contract execution to loading window. Covered storage and dust-controlled handling are required at every stage under IMSBC Code.
Packaging & documentation — Powder / Crushed Sulfur 99.5%
Bulk sulfur ships loose in vessel holds or as 1-tonne FIBC big bags on buyer request. Each lot is accompanied by a mill certificate of analysis showing sulfur content, ash, moisture and particle size distribution, safety data sheet (SDS) per GHS (combustible solid, dust explosion hazard), commercial invoice, weight certificate, bill of lading and certificate of origin. Sulfur content is confirmed by combustion-titration method; particle size by sieve analysis on the COA.
Third-party inspection (SGS, Bureau Veritas or equivalent) at loading can be arranged on buyer request. Hold cleanliness certificate and previous-cargo statement are issued with the shipping instructions package. UN number 1350 applies for road and container transport of powdered sulfur.
FAQ — Powder / Crushed Sulfur 99.5%
What is the difference between powder, crushed and lump sulfur?
All three are elemental sulfur (S8) differing only in particle size distribution. Powder and crushed grades (0–5 mm) suit direct feed to contact-process acid plants, rubber compounding and agricultural dusting. Lump sulfur (above 25 mm) requires crushing at destination and is less processed than sized grades.
How should powdered sulfur be stored after discharge?
Store under cover in a dry, well-ventilated warehouse away from oxidizers and ignition sources. Fine sulfur dust is combustible — ground all equipment, suppress dust during handling and maintain pile temperature below 160 °C to prevent self-heating in large static heaps.
Related products — Powder / Crushed Sulfur 99.5%
- Sulfuric Acid — downstream product from elemental sulfur combustion
- Phosphoric Acid — wet-process grade consuming sulfuric acid feedstock
- Phosphate Rock — upstream ore for the phosphate-sulfur value chain
