Dimethyl silicone oil medicinal grade dimethyl silicone oil CP version can be applied for R & D

  This product is a dimethylsiloxane polymer
[properties] this product is colorless and clear oily liquid; Odorless or almost odorless
This product can be mixed arbitrarily in chloroform, ether, toluene or xylene, and is insoluble in water or ethanol
Relative density the relative density of this product (general rule 0601) is 0
970 ~ 0
980
Refractive index the refractive index of this product (general rule 0622) is 1
400 ~ 1
410
Viscosity the kinematic viscosity of this product (the first method of general rule 0633, capillary inner diameter 2mm) is 500 ~ 1000mm2 / s at 25 ℃
[identification] (1) take 0
5g of this product, put it in a crucible, add 0
5ml sulfuric acid and 0
5ml nitric acid, and slowly ignite it to form white fiber, and finally leave white residue
(2) the infrared light absorption spectrum of this product shall be consistent with the control spectrum (spectrum set 10)
[inspection] pH: take 5ml of ethanol and trichloromethane respectively, shake well, add 1 drop of phenolphthalein indicator solution, drop sodium hydroxide titrant (0
02mol / L) until it is slightly pink, add 1
0g of this product and shake well; If it is colorless, add 0
15ml of sodium hydroxide titrant (0
02mol / L) to make it pink; If it is pink, add 0
15ml of sulfuric acid titrant (0
01mol / L), and the pink shall disappear
Benzene compound take 5g of this product, add 10ml of cyclohexane and shake to dissolve it
Measure the absorbance in the wavelength range of 250 ~ 270nm according to UV-VIS spectrophotometry (general rule 0401), which shall not exceed 0
2
Loss on drying: take this product and dry it at 150 ℃ for 3 hours, and the weight loss shall not exceed 0
5% (general rule 0831)
For heavy metals, take 1
0g of this product, add 5ml of chloroform to dissolve it, dilute it to 20ml with chloroform, add 1
0ml of newly prepared 0
002% dithizone chloroform solution, add 0
5ml of water and 0
5ml of ammonia test solution-0
2% hydroxylamine hydrochloride solution (1:9), shake violently for 1 minute immediately, if color develops, take 0
5ml of standard lead solution, add 20ml of chloroform, self & ldquo; Add 1
0ml of newly prepared 0
002% dithizone chloroform solution; Compared with the control solution obtained by the same method, it shall not be deeper (0
0005%)
[category] foams
[storage] sealed storage
[preparation] (1) dimethylsilicone oil aerosol (2) dimethylsilicone oil tablets