DL-Methionine

AJI92

USP26

EP4

FCC V

Description

White crystals or crystalline powder

White crystals or crystalline powder

White crystals or crystalline powder

White crystals or crystalline powder

Identification

Conform

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Conforms to the requirements

Conforms to the requirements

Assay

99.0%~100.5%

98.5%～101.5%

99.0%～101.0%

98.5%~101.5%

pH

5.6~6.1

5.6~6.1

5.4～6.1

5.6～6.1

Transmittance

≥98.0%

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Loss on drying

≤0.30%

≤0.4%

≤0.5%

≤0.5%

Residue on ignition

≤0.10%

≤0.5%

≤0.1%

≤0.1%

Chloride

≤0.020%

≤0.02%

≤0.02%

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Heavy Metals

≤10ppm

≤0.0015%

≤0.001%

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Iron

≤10ppm

≤0.003％

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Sulfate

≤0.020%

≤0.03%

≤0.02%

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lead[Pb]

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≤5ppm

Arsenic

≤1ppm

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≤0.0001%

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Ammonium

≤0.02%

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≤0.02%

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Other amino acids

None

Conforms

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Pyrongen

Conforms

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Clear and colorless

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Clear, colorless

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Related substance

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Meets with the requirements

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Particle size

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≥95%--＜50um-  ≥1.0%≥100um

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