一级外国黄色视频,免费淫秽视频黄片国产,亚洲一区二区三区黄片,高清国产一区二区在线观看,欧美一级高清黄色录像

Date：

Methyl 4-hydroxybenzoate

Product name	Methyl 4-hydroxybenzoate	Ethyl 4-hydroxybenzoate	Propyl 4-hydroxybenzoate	4-Hydroxybenzoic acid butyl ester
INCI:	Methylparaben	Ethylparaben	Propylparaben	Butylparaben
INCI name:	Methylparaben	Ethylparaben	Propylparaben	Butylparaben
Molecular formula	C₈H₈O₃	C₉H₁₀0₃	C₁₀H₁₂O₃	C₁₁H₁₄O₃
Molecular weight	152.15	166.18	180.20	194.23
CAS	99-76-3	120-47-8	94-13-3	94-26-8

Features and functions:

Broad spectrum bactericide for gram positive, feminine germ and saccharomycetes;
Low application concentration, safe, economic, long serve life;
Recommended dosage: 0.2%~0.5%
It is widely used in cosmetic, medical and food industry for preservation.

[ Back ]