Medicinal grade polyethylene glycol peg400 peg200 insect ash Sichuan wax

Medicinal grade polyethylene glycol peg400 peg200 insect ash Sichuan wax pharmaceutical grade polyethylene glycol peg400 peg200 insect ash Sichuan wax polyethylene glycol 400Juyiʼerchun 400Polyethylene Glycol 400 This product is a mixture
of ethylene oxide and water shrinkage.

The formula is expressed in HO(CH2CH2O)nH, where n represents the mean number of oxyvinyl groups
.

【Properties】This product is a colorless or almost colorless viscous liquid; Slightly smelly
.

This product is extremely soluble
in water or ethanol.

Freezing point Take this product, according to the freezing point determination method (general rule 0613) to measure, record the maximum temperature during the coagulation process, should be 4 ~ 8 °C
.

Relative density The relative density of this product (General 0601) should be 1.
110-1.
140
.

Viscosity The kinematic viscosity of this product (general rule 0633 first method) should be 37~45mm2/s
at 40 °C (capillary inner diameter is 1.
2mm).

【Identification】(1) Take 0.
05g of this product, dilute 5ml of hydrochloric acid and 1ml of barium chloride test solution, shake and filter; add 10% phosphomolybdenic acid solution 1ml in the filtrate to produce yellow-green precipitation
.

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