|
Item: |
Standard / Analytical method USP36/NF31 and USP29 |
Test Result: |
|
Appearance: |
Slightly Yellow Clear Liquid, Color No.6 Max / Sensory analysis |
Conformed |
|
Odor: |
Have a Characteristic Odor Of Menthol Arvensis / Sensory analysis |
Conformed |
|
Identification: |
Conform USD36/NF31 |
Conformed |
|
Relative Density(20/20℃): |
0.896-0.908 The same volume of peppermint oil and distilled water of quality ratio(20℃) |
0.896 |
|
Refractive Index(20℃): |
1.459-1.465 / Join the samples after test to read data(20℃) |
1.460 |
|
Optical Rotation(20℃): |
-18 ° ～ -32 ° Join the samples after test to read data(20℃) |
-21.2° |
|
Ester Content: (Menthylacelate %) |
>5.0 The samples after acetylation, and then ester content accounting again |
5.1 |
|
Acid Value(mg KOH/g) |
1.0 Max Using the sodium hydroxide standard solution to neutralize the free acid in the samples |
0.7 |
|
Solubility(20℃ 70% Ethanol): |
1ml:3ml 1 Volume Soluble In 3 Volumes of 70 %( V/V) Alcohol, Forming Clear Solution |
Conformed |
|
Heavy Metals: |
Not more than 20 ppm |
Conformed |
|
Limit of Dimetil Sulfide |
Conform USD36/NF31 |
Conformed |
|
Total Menthol content: |
50.0% Min After acetylation to calculate the free alcohol and specify the alcohol, and then checking the
|
50.3% |
|
L-Menthol Content: |
28%-40% / By GC |
33.2% |
|
α-pinene |
/ By GC |
4.44% |
|
β-pinene |
/ By GC |
5.01% |
|
Limonene |
/ By GC |
8.59% |
|
RESULT: |
THE ABOVE MATERIALS CONFORM TOUSP36/NF31 and USP29 |
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