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Name L-Methionine

Molecular formular C5H11NO2S

Molecular weight 149.21

CAS No. 63-68-3

面議

Specification

L-Methionine

CP2015

AJI92

USP32

USP40

Description

White or almost white crystals or crystalline powder

White crystals or crystalline powder

---

---

Identification

Conforms

Conform

Conform

Conform

Assay

≥98.5%

99.0%~100.5%

98.5%101.5%

98.5%101.5%

pH

5.6~6.1

5.6~6.1

5.6~6.1

5.66.1

Transmittance

≥98.0%

≥98.0%

---

---

Loss on drying

≤0.2%

≤0.20%

≤0.3%

≤0.3%

Residue on ignition

≤0.1%

≤0.10%

≤0. 4%

≤0. 4%

Chloride

≤0.02%

≤0.020%

≤0.05%

≤0.05%

Heavy Metals

≤10ppm

≤10ppm

≤15ppm

≤15ppm

Iron

≤15ppm

≤10ppm

≤30ppm

≤30ppm

Sulfate

≤0.02%

≤0.020%

≤0.03%

≤0.03%

Endotoxin

25EU/g

---

---

---

Arsenic

≤1ppm

≤1ppm

---

---

Ammonium

≤0.02%

≤0.02%

---

---

Other amino acids

Conforms

Conforms

Conforms

Conforms

Pyrogen

---

Conforms

---

--

Hydrolyzable substances

---

---

---

---

Specific Rotation

+21.5°  +25.0°

+23.0°  +25.0°

+22.4o~+24.7o

+22.4o~+24.7o




Specification


L-Methionine

CP2015

AJI92

USP32

USP40

Description

White or almost white crystals or crystalline powder

White crystals or crystalline powder

---

---

Identification

Conforms

Conform

Conform

Conform

Assay

≥98.5%

99.0%~100.5%

98.5%101.5%

98.5%101.5%

pH

5.6~6.1

5.6~6.1

5.6~6.1

5.66.1

Transmittance

≥98.0%

≥98.0%

---

---

Loss on drying

≤0.2%

≤0.20%

≤0.3%

≤0.3%

Residue on ignition

≤0.1%

≤0.10%

≤0. 4%

≤0. 4%

Chloride

≤0.02%

≤0.020%

≤0.05%

≤0.05%

Heavy Metals

≤10ppm

≤10ppm

≤15ppm

≤15ppm

Iron

≤15ppm

≤10ppm

≤30ppm

≤30ppm

Sulfate

≤0.02%

≤0.020%

≤0.03%

≤0.03%

Endotoxin

25EU/g

---

---

---

Arsenic

≤1ppm

≤1ppm

---

---

Ammonium

≤0.02%

≤0.02%

---

---

Other amino acids

Conforms

Conforms

Conforms

Conforms

Pyrogen

---

Conforms

---

--

Hydrolyzable substances

---

---

---

---

Specific Rotation

+21.5°  +25.0°

+23.0°  +25.0°

+22.4o~+24.7o

+22.4o~+24.7o



Consultation telephone


TEL:+86-311-88908111


Address:Gaocheng Technology Development Zone, Shijiazhuang City, Hebei Province   Phone:+86-311-88908111   Fax:+86-311-88908222   Email:[email protected]


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