DL-Methionine

ITEM

STANDARD

Appearance

White Crystalline Powder

Assay (on dry matter) %

98.5-101.5

Clarity of Solution

Clear, colorless

Transmittance ≥%

98.0

PH Value(1g/100ml in water)

5.4-6.1

Chloride(As Cl) ≤ %

0.05

Heavy Metals(As Pb) ≤ %

0.002

Lead (As Pb) ≤ %

0.001

Arsenic (As AS) ≤ %

0.00015

Sulfate(SO4) ≤ %

0.02

Ammonium( As NH4) ≤ %

0.01

Loss on drying ≤ %

0.5

Residue on ignition(as sulphate ash) ≤ %

0.1

Organic Volatile Impurities

Meets the requirement