Chinese name polyglutamic acid English name POLY-L-GLUTAMIC ACID 2'000-15'000 nickname natto gum, polyglutamic acid chemical formula L-Glu- (L-Glu) nL-Glu molecular weight 700-200 million Unit CAS Registration No. 25513-46-6EINECS Registration No. 200-293-7 Water-soluble water-soluble appearance white powder Application of water-retaining agent, heavy metal ion adsorbent, and drug carrier molecular formula

1. Cosmetic grade and food grade: molecular weight 700,000;

Second, pharmaceutical grade: molecular weight 1 million;

Three, water treatment level: molecular weight 1.5 million

4. Soil and plant conditioner grade: molecular weight below 20,000.