DL-Methionine

AJI92

EP4

Description

White crystals or crystalline powder

White crystals or crystalline powder

Identification

Conform

Conforms to the requirements

Assay

99.0%~100.5%

99.0%～101.0%

pH

5.6~6.1

5.4～6.1

Transmittance

≥98.0%

/

Loss on drying

≤0.30%

≤0.5%

Residue on ignition

≤0.10%

≤0.1%

Chloride

≤0.020%

≤0.02%

Heavy Metals

≤10ppm

≤0.001%

Iron

≤10ppm

/

Sulfate

≤0.020%

≤0.02%

lead[Pb]

/

/

Arsenic

≤1ppm

≤0.0001%

Ammonium

≤0.02%

≤0.02%

Other amino acids

None

/

Pyrongen

Conforms

/

Clear and colorless

/

Clear, colorless

Related substance

/

Meets with the requirements

Particle size

/

≥95%--＜50um-  ≥1.0%≥100um