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Pharmaceutical injection grade polyethylene glycol PEG400cas25322-68-3 polyethylene oxide resin is a high molecular weight homopolymer obtained by heterogeneous catalyzed ring-opening polymerization of ethylene oxide
.
It can usually be divided into those with a relative molecular mass of 2 × 104 or more and tens of thousands or more.
The former is called polyethylene glycol, and the latter is called polyethylene oxide
.
Polyethylene oxide has the properties of flocculation, thickening, slow release, lubrication, dispersion, retention, water retention, etc.
In the industry, the product is non-toxic and non-irritating, and will not remain, deposit or breed volatiles during the production process of the product
.
As a papermaking additive, it can improve the retention rate of fillers and fine fibers, and is especially suitable as a dispersant for long fibers, which can shorten the beating time
.
[25322-68-3] This product is a mixture of polycondensation of ethylene oxide and water
.
The molecular formula is represented by H(OCH2CH2)nOH, where n represents the average number of oxyethylene groups
.
【Properties】This product is a colorless or almost colorless viscous liquid; slightly odorous
.
This product is easily soluble in water or ethanol
.
Relative density The relative density of this product (general rule 0601) should be 1.
110 to 1.
140
.
Viscosity The kinematic viscosity of this product (the first method of general rule 0633) should be 37~45mm2/s at 40°C (the inner diameter of the capillary is 1.
2mm or a suitable inner diameter of the capillary)
.
[Identification] (1) Take 0.
05g of this product, add 5ml of dilute hydrochloric acid and 1ml of barium chloride test solution, shake and filter; add 1ml of 10% phosphomolybdic acid solution to the filtrate to produce a yellow-green precipitate
.
(2) Take 0.
1g of this product, put it in a test tube, add 0.
1g of potassium thiocyanate and 0.
1g of cobalt nitrate, after mixing, add 5ml of dichloromethane, the solution turns blue
.
Lactose Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/bag Aspartame Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Gum Arabic Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Bohm pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Chitosan pharmaceutical grade excipients (2020 Pharmacopoeia) 1kg/bag 25kg/barrel Propylene glycol pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel bran distillation Oil 1kg 25kg glyceryl monostearate (2020 Pharmacopoeia) pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel soybean lecithin pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Sodium acetate pharmaceutical grade excipients (2020 Pharmacopoeia) 500g /bottle 25kg/barrel phenol pharmaceutical grade excipients (2020 Pharmacopoeia) 1kg/bottle 25kg/barrel
.
It can usually be divided into those with a relative molecular mass of 2 × 104 or more and tens of thousands or more.
The former is called polyethylene glycol, and the latter is called polyethylene oxide
.
Polyethylene oxide has the properties of flocculation, thickening, slow release, lubrication, dispersion, retention, water retention, etc.
In the industry, the product is non-toxic and non-irritating, and will not remain, deposit or breed volatiles during the production process of the product
.
As a papermaking additive, it can improve the retention rate of fillers and fine fibers, and is especially suitable as a dispersant for long fibers, which can shorten the beating time
.
[25322-68-3] This product is a mixture of polycondensation of ethylene oxide and water
.
The molecular formula is represented by H(OCH2CH2)nOH, where n represents the average number of oxyethylene groups
.
【Properties】This product is a colorless or almost colorless viscous liquid; slightly odorous
.
This product is easily soluble in water or ethanol
.
Relative density The relative density of this product (general rule 0601) should be 1.
110 to 1.
140
.
Viscosity The kinematic viscosity of this product (the first method of general rule 0633) should be 37~45mm2/s at 40°C (the inner diameter of the capillary is 1.
2mm or a suitable inner diameter of the capillary)
.
[Identification] (1) Take 0.
05g of this product, add 5ml of dilute hydrochloric acid and 1ml of barium chloride test solution, shake and filter; add 1ml of 10% phosphomolybdic acid solution to the filtrate to produce a yellow-green precipitate
.
(2) Take 0.
1g of this product, put it in a test tube, add 0.
1g of potassium thiocyanate and 0.
1g of cobalt nitrate, after mixing, add 5ml of dichloromethane, the solution turns blue
.
Lactose Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/bag Aspartame Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Gum Arabic Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Bohm pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Chitosan pharmaceutical grade excipients (2020 Pharmacopoeia) 1kg/bag 25kg/barrel Propylene glycol pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel bran distillation Oil 1kg 25kg glyceryl monostearate (2020 Pharmacopoeia) pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel soybean lecithin pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Sodium acetate pharmaceutical grade excipients (2020 Pharmacopoeia) 500g /bottle 25kg/barrel phenol pharmaceutical grade excipients (2020 Pharmacopoeia) 1kg/bottle 25kg/barrel