L-carnitine

ITEM

SPECIFICATION

METHOD

Identification

IR

USP<197K>

Appearance

White crystalline powder

Visual

Specific rotation

-29.0~32.0°

USP<781S>

PH

5.5-9.5

USP<791>

Water

≤1%

USP<921>Method A

Residual solvents

≤0.5%

USP<467>

Residue on ignition

≤0.5%

USP<281>

Sodium

≤0.1%

USP<852>

Potassium

≤0.2%

USP<852>

CI-

≤0.4%

USP<221>

CN-

Not detectable

Ch.P Appendix VIII F Method A

Heavy metal

≤10ppm

USP<231>Method A

Arsenic(As)

≤1ppm

Ch.P Appendix VIII J Method A

Lead(Pb)

≤3ppm

AAS

Cadmium(Cd)

≤1ppm

AAS

Mercury(Hg)

≤0.1ppm

AAS

TPC

≤1000Cfu/g

USP<61>

Yeast&Mold

≤100Cfu/g

USP<61>

E.coli

Negative/1g

Ch.P Appendix XI J.

Salmonella

Negative/25g

Ch.P Appendix XI J.

Assay

98.0%~102.0%

Tritration

Bulk density

0.3~0.6g/ml

Physical

Tapped density

0.5~0.8g/ml

Physical