不打码的一级在线观看_曰本人牲交免费视频试看_日本十八禁免费看污网站_2020亚洲а∨天堂在线观看

Current location:Products
products center
Dimethyl sulfone
project Specifications
Appearance White crystal
Mesh number 40-60 mesh
purity ＞99.9%
DMSO content ≤0.01%
Melting point @ 760mm Hg 108℃±1℃
Bulk density ＞0.65g/ml
water content ＜0.2%
heavy metal ＜3ppm
arsenic ＜0.1ppm
cadmium ＜0.1ppm
mercury ＜0.1ppm
lead ＜1ppm
Burning residue ＜0.2%
Total bacteria ＜1000CFU/G
Coliform No
Escherichia coli No
Yeast ＜10
Salmonella No

【Back】