Medicinal grade boric acid poloxamer 188 soybean phospholipids Jinyang excipients

Medicinal grade boric acid poloxamer 188 soybean phospholipids Jinyang excipient pharmaceutical grade boric acid poloxamer 188 soybean phospholipids Jinyang excipients engsuanBoric Acid H3BO3 61.
83 [10043-35-3] This product is calculated according to dry products, containing H3BO3 not less than 99.
5%.


【Properties】This product is a colorless crystal with pearl luster or a white loose powder
.

This product dissolves in ethanol or water; Soluble
in boiling water or boiling ethanol.

【Identification】The identification reaction of borate in the aqueous solution of this product (General 0301).


【Check】Acidity Take 1.
0g of this product, add 30ml of water to dissolve, and determine according to law (General 0631), the pH value should be 3.
5 ~ 4.
8
.

The clarity and color of the solution Take 1.
0g of this product, add 30ml of water to dissolve, check according to law (general rule 0901 first method and general rule 0902), the solution should be clear and colorless; if turbid, compared with the No.
1 turbidity standard (general rule 0902 first method), it shall not be more concentrated
.

The clarity of the ethanol solution Take 1.
0g of this product, add 25ml of ethanol to dissolve, check according to law (general rule 0902 first method), the solution should be clarified
.

Chloride Take 0.
50g of this product, check according to law (General 0801), and compare with the control solution made of 5.
0ml of standard sodium chloride solution, it shall not be more concentrated (0.
01%)
.

Sulfate Take 0.
50g of this product, check according to law (General 0802), and compare with the control solution made of 2.
0ml of standard potassium sulfate solution, it shall not be more concentrated (0.
04%)
.

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