Vitamin U
| Price | $1 |
| Package | 1g |
| Min. Order: | 1g |
| Supply Ability: | 2000 Kilogram/Kilograms per Month Vitamin U |
| Update Time: | 2019-07-31 |
Product Details
| Product Name: Vitamin U | CAS No.: 3493-12-7 |
| Min. Order: 1g | Purity: 99.5% |
| Supply Ability: 2000 Kilogram/Kilograms per Month Vitamin U | Release date: 2019/07/31 |
Product Name:Methylmethionine Sulfonium Chloride
CAS #:3493-12-7
Molecular Formula: C6H14ClNO2S
Molecular Weight:199.7
Properties:white crystalline powder
Specification:
|
ITEM |
SPECIFICATIONS |
RESULTS |
|
Appearance |
Slightly yellow, clear, viscous oil |
Qualified |
|
Assay by G.C |
98.0—102.0% |
98.8% |
|
Identity |
Corresponds |
Qualified |
|
Infrared spectrum |
Meets EP requirement |
Qualified |
|
Option rotation |
-0.01°~ +0.01° |
Qualified |
|
Density(20°C) |
0.952—0.966g/ml |
0.955g/ml |
|
Refractive index(20°C) |
1.494—1.498 |
1.496 |
|
Related substances |
Impurities A, C: for each impurity ≤ 0.5% Impurity B ≤ 1.5% Sum of impurity D+E ≤ 1.0% Any other impurities: Meet EP requirements Total impurities: ≤ 2.5% |
Qualified |
|
Absorbance in ethanol: At about 284nm (max) At about 254nm (min) |
42.0—45.0 7.5—9.0 |
44.0 8.8 |
|
Acidity |
Max.1.0ml of 0.1 N NaOH |
0.04 ml |
|
Sulphated ashes |
≤0.1% |
0.03% |
|
Heavy metals |
≤10ppm |
<5ppm |
|
Lead |
≤2ppm |
0.04ppm |
|
Arsenic |
≤3ppm |
<1ppm |
|
Free tocopheryl |
≤1.0% |
0.35% |
|
Organic volatile impurities |
Meets USP requirements |
Qualified |
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China- Since: 2014-05-13
- Address: Room 2004, Oriental Century Square Tower A, East Road Yellow River, Xinhua District, Cangzhou City