Audited Supplier
NINGBO HI-TECH ZONE YEFENG NEW MATERIALS TECHNOLOGY CO.,LTD. was established in 2012 and located in Ningbo city Zhejiang province, We focus on cosmetic rawmateirls, pharmaceutical raw mateirls and food additive chemicals export more than 20 years. We also can provide some products formula in these field. And also can service for client do some special chemical test in china mian lab, Like ingredint Analysis, UV test. We trust you will satisfy our quality and enjoly our service. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.
Supply CAS 52-90-4 L-cysteine L-cysteine Powder 99% Cysteine Powder free sample
Item | Standard |
Assay | 98.0~ 101.0% |
PH | 4.5~5.5 |
Specific rotation | +8.3°~+9.5° |
State of solution | ≥95.0% |
Ammon i um (NH) | ≤0.02% |
Sulfate (s0) | ≤0.030% |
Iron(Fe) | <10ppm |
Heavy metals(Pb) | <10ppm |
AS (As2o3) | ≤1ppm |
Loss on drying | ≤0.5% |
Residue on ignition | ≤0.10% |
Other amino acids | Chromatographically |
Shopping Notes
1. About color difference: we all items are for real shooting; for technology, display, light, environmental reasons may be a
slight deviation, please in kind prevail.
3. About packaging: sample and 1-2kg: plastic bag inside aluminum foil bag outside;
3-15kg: plastic bag aluminum foil bag inside, thickened carton outside;
16-25kg plastic bag inside, fiber drum outside.
4. About transportation: less than 100kg, international express, DHL is preferred, or according to customer requirements. More than 100kg by air or sea.
5. About the receipt: please check the goods in person, if there is missing package or the pack is damaged, please contact the courier or service agent.
6. After sales: If you have any questions, please contact us in time.
7. About sample: Sample not free, but sample fee will be returned for subsequent orders.
