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USP

EP

國(guó)標(biāo)

Identification

Chemical method or infrared method

Chemical method or infrared method

Chemical method or infrared method

Specific rotation

-29.0° - -32.0°

-29.0° - -32.0°

-29.0° - -32.0°

PH value

5.5-9.5

6.5-8.5

5.5-9.5

Moisture

≤4.0%

≤1.0%

≤4.0%

Residue on ignition

≤0.5%

≤0.1%

≤0.5%

Cyanide

-

-

no

Chloride

≤0.4%

≤200ppm

≤0.4%

Sulfate

-

≤300ppm

-

Natrium

≤0.1%

-

≤0.1%

Potassium

≤0.2%

-

≤0.2%

Heavy metal

≤20ppm

≤10ppm

≤20 ppm

Arsenic

≤2ppm

-

≤2 ppm

Solution clarity

-

colorless and transparent

-

Relative substances

-

impurity A≤0.5%

-

other impurities ≤0.1%

Residual acetone

-

-

≤0.1%

Content

100±3%

100±2%

100±3%