Identification

Positive

Melting point of insolated   saccharin ℃

226-230

Appearance

White crystals

Content  %

99.0-101.0

Loss on drying %

≤15

Ammonium salts  ppm

≤25

Arsenic  ppm

≤3

Benzoate and salicylate

No precipitate or violet color appears

Heavy metals  ppm

≤10

Free acid or alkali

Complies with BP /USP/DAB

Readily carbonizable substances

Not more intensely colored than reference

P-toluene sulfonamide

≤10ppm

O-toluene sulfonamide

≤10ppm

Selenium  ppm

≤30

Related substance

Complies with DAB

Clarity and color solution

Color less clear

Organic volatiles

Complies with BP

PH value

Complies with BP/USP

Benzoic acid-sulfonamide

≤25ppm