Technical reference

Technical Specifications & Product Grades

Verified baseline standards for global industrial sulphur procurement and maritime bulk shipping.

Grade A Bulk Sulphur Standard Baseline

ParameterGuaranteed ValueTest Standard Method
Purity (Dry Basis)Min 99.5% – 99.98%ASTM D129 / ISO Standard
Moisture ContentMax 0.5%ASTM D1505
Ash ContentMax 0.05%ASTM D482
Carbon / Organic MatterMax 0.05%ASTM D5291
Acidity (as H2SO4)Max 0.01%ASTM D4042
Color / AppearanceBright Yellow (Bright Grade A)Visual Inspection

Commercial Sulphur Forms & Applications

Granular Sulphur (Grade A)

Spherical pellets manufactured to minimize dust generation and eliminate hazard risks during vessel loading.

Particle Size: 2.0 mm – 6.0 mm | Bulk Carrier Freight

Lump / Flake Sulphur

Traditional solid format obtained through mechanical crushing of solidified elemental sulphur blocks.

Format: Irregular Lumps / Flakes | Industrial Chemistry

Molten / Liquid Sulphur

High-purity liquid sulphur preserved in thermal conditions between 140°C and 150°C for direct acid plant feed.

Transport: Heated Iso-Tanks / Rail Vagon | Direct Processing

Powder & Micronized Sulphur

Finely milled elemental sulphur ground to specific mesh scales for specialized agricultural and rubber applications.

Mesh: 100 to 320 Mesh | Packaging: Jumbo Big Bags

Need a commercial specification confirmation?

Submit destination, quantity, required form, target delivery window and applicable product parameters to the Chelet trade desk.