1

性狀

Description

白色或類白色粉末，無味，無臭，有引濕性

White powder or almost white powder tasteless   and odorless, hygroscopicity.

2

鑒別

Identification

(1)在262±1nm波長處有吸收

Have the   maximum absorption at 262±1nm

(2)   A250/A260=0.70~0.80

   A280/A260=0.33~0.43

(3) 本品的水溶液顯鈉鹽的鑒別反應(yīng)

The aqueous solution of this product display significant sodium reaction.

3

酸度

PH

3.0~7.0

4

溶液澄清度與顏色

Clarity and color of solution

應(yīng)澄清無色

Clear and colorless

5

蛋白質(zhì)

Protein

不得混濁

No turbidity

6

干燥失重

Loss on   drying

≤15%

7

重金屬

Heavy   metals

 ≤20ppm

8

氯化物

Chloride

≤0.2%

9

純度

Purity   (HPLC)

≥95.0%

10

含量

Assay

≥80.0%