Methyl sulfonyl methane（MSM）
Cas No.：67-71-0
Standard：99%
Synonym: Dimethyl sulfone; MSM;MethylSulfonylMethane ; Methyl sulfone
Molecular Formula: C2H6O2S
Molecular Weight: 94.13
Molecular Structure: 
Specification:
|
Item
|
Standard
|
|
Appearance
|
White crystalline
|
|
Residue on Ignition
|
≤0.10%
|
|
Heavy metals
|
≤10ppm
|
|
Lead (Pb)
|
≤3 ppm
|
|
Cardmiu (Cd
|
≤1 ppm
|
|
Arsenic(As)
|
≤1 ppm
|
|
Mercury (Hg
|
≤0.1 ppm
|
|
Melting point
|
108.0-110.0ºC
|
|
Water Content
|
≤0.20%
|
|
DMSO Content
|
≤0.05%
|
|
Mesh size
|
20-40mesh
|
|
Assay
|
≥99.90%
|
|
Bulk density
|
≥0.75g/ml
|
|
Total plate count
|
<1000cfu/g
|
|
Yeast/Mold
|
<10cfu/g
|
|
Coliform
|
Negative
|
|
E.Coli
|
Negative
|
|
Salmonella
|
Negative
|
|
Staphylococcus
|
Negative
|
Package: 25kg drum/bag or according to the requirements of customers.