飘雪在线影院观看免费完整版高清_a毛片毛片AV永久免费_国产日韩高清不卡_国产精品乱码一二三区_成人高清无码不卡_婷婷丁香啪啪_欧美成人h版电影壮志凌云_在线看片免费**久试看_欧美色图校园春色_国产无套抽出白浆来

CHITIN
Application

Chitin is a kind of animal macromolecule polymer cellulose extracted from crab and shrimp shells. It is honored as ""the sixth life element"" by the scientific community , so European and the United State governments both identify it as a functional immune substance. Chitin is the only positive food fiber with positive electricity in the universe and widely used in industry, agriculture, medical care, beauty and cosmetics, biological engineering, etc.

Product parameter
  • Molecular formula： C8H13NO5
  • Properties： White to faint yellow amorphous appearance, odourless, tasteless. dissolved in dimethyl acetamide with 8% lithium chloride or concentrated acid; undissolved in water, dilute acid, alkali, ethanol, or other organic solvents.
  • packaging： Inner with two layers of plastic bags, outer paper drum. Net weight: 25 kg/drum
  • Storage and transportation： Stored in a dry, clean, shady and cool place; Transported according to the packing requirements, with light loading and discharging, keeping the direction of package the same to products; Shall not be mixed with hazardous, toxic and pollution items; Shall be protected from rain.

Test Items

Reagent Grade

Industrial Grade

Apperance

White flakes

Yellow or cinerous flakes

Loss on drying

≤10%

≤12%

Residue on ignition

≤1%

5-8%
back