2021免费的一级片,欧美h视频,国产精品黄在线观看免费网站,18片毛片60分钟免费观看,一级毛片大片毛片花片,久久99久久99精品观看,大香大香伊人在钱线久久

Structure Formula：

Molecular Formula：

C6H9N3O2.HCl.H2O

Molecular Weight：

209.63

Cas No：

[5934-29-2]

Characteristics：

White crystals or crystalline powder.

Quality Standards：

AJI97

Assay, %

98.5~101.0

Specific optical rotation

-8.0°~ +9.5°

Transmittance

≥98.0

pH value

3.5~4.5

Loss on drying, %

≤0.2

Heavy metals, %

≤0.001

Residue on ignition, %

≤0.1

Chloride,%

15.6~17.1

Sulfate,%

≤0.02

Arsenic, %

≤0.0001

Iron, %

≤0.001

Ammonium (as NH+4), %

≤0.02

Other amino acids

Qualified

Pyrogen

Nonpyrogen

Package and Transport：

　　The inner packed with two layer polyethylene plastic bags; the outer packed with the paper board barrel. Net weight 25kg.

        Handle with care. Protect the product from sunshine or rain. Do not transport with poisonous or harmful goods. This product belongs to the non-dangerous product category and can be transported as a general chemical product.

Storage：

　　Store in dry, clear, shady and place. The expiry date is for two years.