Pharmaceutical grade isopropanol 500 grams of small trial research and development has been registered

Pharmaceutical grade isopropanol 500 g small trial research and development has been registered for the record of this product is 2-propanol
.

【Properties】This product is a colorless and clear liquid
.

This product is arbitrarily miscible with water, methanol, ethanol or can be arbitrarily miscilated
.

Relative density The relative density of this product (general rule 0601 Merriam-Webster specific gravity scale method) is 0.
785~0.
788
.

Refractive index The refractive index of this product (general rule 0622) is 1.
376-1.
379
.

【Identification】(1) Take 1ml of this product, add 2ml of iodine test solution and 2ml of sodium hydroxide test solution, shake it, that is, produce yellow precipitation, and produce the special odor
of iodoform.

(2) Take 5ml of this product, add 20ml of potassium chromate test solution, and then carefully add 5ml of sulfuric acid, slowly heat on the water bath, the gas produced can make the filter paper soaked in ethanol solution (1:10) and 30% sodium hydroxide solution reddish-brown
.

(3) The infrared light absorption pattern of this product should be consistent with the map of the control product (General Rule 0402
).

【Check】Acidity Take 50.
0ml of this product, add 100ml of water, add 2 drops of phenolphthalein indicator solution, drop it to pink with sodium hydroxide titration solution (0.
1mol/L) for 30 seconds without fading, and consume the volume of sodium hydroxide titration solution (0.
1mol/L) should not exceed 1.
4ml
.

The clarity and color of the solution Take 1.
0ml of this product, add 20ml of water, mix well, let stand for 5 minutes, check according to law (General 0901 and General 0902), the solution should be clear and colorless
.

Absorbance Take this product, according to the ultraviolet-visible spectrophotometry (general rule 0401) determination, the absorbance at 230nm, 250nm, 270nm, 290nm and 310nm wavelength shall not exceed 0.
30, 0.
10, 0.
03, 0.
02 and 0.
01
, respectively.

Insoluble matter in water Take 2.
0ml of this product, add 8ml of water, shake, and place for 5 minutes, the solution should be clarified
.

No volatiles Take 50.
0ml of this product, place in an evaporation dish of constant weight at 105 ° C, steam dry on a water bath, and then dry at 105 ° C for 1 hour, and the residual residue shall not exceed 1.
0mg [0.
002% (g / ml)].