Natural Menthol crystals

Testing Items

Standard Requirements

Testing Result

 Character

Colorless transparent prismatic or acicular crystal, aroma of Asia natura menthol feature. 

Qualified 

melting point

42°C -- 44°C

42.2°C

specific rotation(20°C)

-50° -- -49°

  -49.45°

Non-volatile matter

≤0.05%

0.008%

Arsenic Content  

  ≤0.0002%

 0.0001%

Heavy Metals ( pb)

  ≤0.0005%

  0.00027%

solubility

Add 1g volume sample to 5ml volume of ethanol 90%(v/v), obtaining a settled solution.

Qualified

Levo-menthol Content

95.0%~105.0%

 99.2%

Main Ingredients

Levo-menthol,menthone,dl-isomenthol, pinene etc.

Qualified