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Name L-Aspartic Acid

Molecular formular C4H7NO4

Molecular weight 133.10

CAS No. 56-84-8

面议

Specification

L-Aspartic Acid

CP2015

AJI97

USP40

FCCIV

Description

White or off-white crystalline or crystalline powder

White crystalline powder

---

---

Identification

Conforms

Conform

Conform

---

Assay

≥98.5%

98.5%~101.0%

98.5%~101.5%

98.5%~101.5%

pH

2.0~4.0

2.5~3.5

---

---

Transmittance

≥98.0%

≥98.0%

---

---

Loss on drying

≤0.2%

≤0.20%

≤0.5%

≤0.25%

Residue on ignition

≤0.1%

≤0.10%

≤0.1%

≤0.1%

Chloride

≤0.02%

≤0.020%

≤0.02%

---

Heavy Metals

≤10ppm

≤10ppm

≤10ppm

≤10ppm

Iron

≤10ppm

≤10ppm

≤10ppm

---

Sulfate

≤0.02%

≤0.020%

≤0.03%

---

lead[Pb]

---

---

---

≤5ppm

Arsenic

≤1ppm

≤1ppm

---

---

Ammonium

≤0.02%

≤0.02%

---

---

Other amino acids

Conforms

---

Conforms

---

Pyrogen

---

Conforms

---

---

Specific Rotation

+24.0°~+26.0°

+24.8°~+25.8°

+24.0°~+26.0°

+24.5°+26.0°

Related compounds

---

---

Conforms

---




Specification


L-Aspartic Acid

CP2015

AJI97

USP40

FCCIV

Description

White or off-white crystalline or crystalline powder

White crystalline powder

---

---

Identification

Conforms

Conform

Conform

---

Assay

≥98.5%

98.5%~101.0%

98.5%~101.5%

98.5%~101.5%

pH

2.0~4.0

2.5~3.5

---

---

Transmittance

≥98.0%

≥98.0%

---

---

Loss on drying

≤0.2%

≤0.20%

≤0.5%

≤0.25%

Residue on ignition

≤0.1%

≤0.10%

≤0.1%

≤0.1%

Chloride

≤0.02%

≤0.020%

≤0.02%

---

Heavy Metals

≤10ppm

≤10ppm

≤10ppm

≤10ppm

Iron

≤10ppm

≤10ppm

≤10ppm

---

Sulfate

≤0.02%

≤0.020%

≤0.03%

---

lead[Pb]

---

---

---

≤5ppm

Arsenic

≤1ppm

≤1ppm

---

---

Ammonium

≤0.02%

≤0.02%

---

---

Other amino acids

Conforms

---

Conforms

---

Pyrogen

---

Conforms

---

---

Specific Rotation

+24.0°~+26.0°

+24.8°~+25.8°

+24.0°~+26.0°

+24.5°+26.0°

Related compounds

---

---

Conforms

---



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