Medicinal grade glycerol 30kg content of 99 or more

Medicinal grade glycerol content of 30kg or more than 99 moisture Take this product, according to the moisture determination method (general rule 0832 first method 1) determination, the moisture content shall not exceed 2.
0%.


Blazing residue Take 20.
0g of this product, heat until spontaneous combustion, stop heating, wait for combustion to be completed, let it cool, check according to law (General Rule 0841), the residual residue shall not exceed 2mg
.

Ammonium salt Take 4.
0g of this product, add 5ml of 10% potassium hydroxide solution, mix well, and leave at 60 °C for 5 minutes, ammonia odor
must not occur.

Iron salt Take 10.
0g of this product, check according to law (general rule 0807) and compare with the control solution made of standard iron solution 1.
0ml, not deeper (0.
0001%)
.

Calcium salt Take 2.
5g of this product, add 8ml of water, shake well, add 5 to 6 drops of ammonium oxalate test solution, place for 15 minutes, the solution should be clarified
.

Heavy metals Take 5.
0g of this product, inspect according to law (General 0821 First Law), containing heavy metals shall not exceed 2
/100.

Arsenic salt Take 6.
65g of this product, add 23ml of water and 5ml of hydrochloric acid to mix well, check according to law (General 0822 First Law), should comply with the provisions (0.
000 03%)
.

【Content determination】Take 0.
20g of this product, weigh it precisely, add 90ml of water, mix well, precisely add 2.
14% sodium periodate solution 50ml, shake well, place in the dark place for 15 minutes, add 50% (g / ml) ethylene glycol solution 10ml, shake well, place in the dark place for 20 minutes, add phenolphthalein indicator solution 0.
5ml, titrate to red with sodium hydroxide titration solution (0.
1mol/L), do not fade within 30 seconds, and correct the titration result with a blank test
。
Each 1 ml of sodium hydroxide titration solution (0.
1 mol/L) corresponds to 9.
21 mg of C3H8O3
.

【Category】Pharmaceutical excipients, solvents and suspending agents, etc
.

【Storage】Sealed and stored
in a dry place.

Note: This product has moisture inducing, can form a complex with boric acid, overheating will decompose toxic; Co-research with strong oxidants may explode, and it will turn black
when exposed to light or contact with basic bismuth nitrate and oxidants.