Gypsum
HS code
2520
Calcium sulphate. Cement mills buy on purity and chloride; plasterboard and agricultural buyers work to limits that have little in common with either.
Specification
What to specify
What a supplier will ask you for, in the order they will ask.
- 01 Purity as calcium sulphate dihydrate
- 02 Combined water content
- 03 Chloride content
- 04 Free moisture
- 05 Size distribution