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Name L-Threonine

Molecular formular C4H9NO3

Molecular weight 119.12

CAS No. 72-19-5

面議

Specification

L-Threonine

CP2015

AJI92

USP32

USP40

Description

Should be white crystalline or crystalline powder

White crystals or crystalline powder

---

---

Identification

Conforms

Conform

---

Conform

Assay

≥98.5%

99.0%100.5%

98.5%101.5%

98.5%101.5%

pH

5.0~6.5

5.2~6.2

5.0~6.5

5.0~6.5

Transmittance

≥98.0%

≥98.0%

---

---

Loss on drying

≤0.2%

≤0.20%

≤0.2%

≤0.2%

Residue on ignition

≤0.1%

≤0.10%

≤0.1%

≤0. 4%

Chloride

≤0.02%

≤0.020%

≤0.05%

≤0.05%

Heavy Metals

≤10ppm

≤10ppm

≤15ppm

≤15ppm

Iron

≤10ppm

≤10ppm

≤30ppm

≤30ppm

Sulfate

≤0.02%

≤0.020%

≤0.03%

≤0.03%

Endotoxin

12EU/g

---

---

---

Arsenic

≤1ppm

≤1ppm

---

---

Ammonium

≤0.02%

≤0.02%

---

---

Other amino acids

Conforms

Conforms

---

Conforms

Pyrogen

---

Conforms

---

---

Specific Rotation

-26.0° ~ -29.0°

-27.6°~ -29.0°

-26.7°~-29.0°

-26.7°~-29.1°




Specification


L-Threonine

CP2015

AJI92

USP32

USP40

Description

Should be white crystalline or crystalline powder

White crystals or crystalline powder

---

---

Identification

Conforms

Conform

---

Conform

Assay

≥98.5%

99.0%100.5%

98.5%101.5%

98.5%101.5%

pH

5.0~6.5

5.2~6.2

5.0~6.5

5.0~6.5

Transmittance

≥98.0%

≥98.0%

---

---

Loss on drying

≤0.2%

≤0.20%

≤0.2%

≤0.2%

Residue on ignition

≤0.1%

≤0.10%

≤0.1%

≤0. 4%

Chloride

≤0.02%

≤0.020%

≤0.05%

≤0.05%

Heavy Metals

≤10ppm

≤10ppm

≤15ppm

≤15ppm

Iron

≤10ppm

≤10ppm

≤30ppm

≤30ppm

Sulfate

≤0.02%

≤0.020%

≤0.03%

≤0.03%

Endotoxin

12EU/g

---

---

---

Arsenic

≤1ppm

≤1ppm

---

---

Ammonium

≤0.02%

≤0.02%

---

---

Other amino acids

Conforms

Conforms

---

Conforms

Pyrogen

---

Conforms

---

---

Specific Rotation

-26.0° ~ -29.0°

-27.6°~ -29.0°

-26.7°~-29.0°

-26.7°~-29.1°



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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