离岸价格
获取最新报价( Negotiable )
|Minimum Order
位置:
China
最小订单价格:
-
最小订单:
25 Kilogram
包装细节:
25kg/drum
交货时间:
7days
供应能力:
15 Ton per Month
付款方式:
T/T, L/C, D/A, D/P, Western Union, Money Gram, PayPal, Other
联系人 Ms. Evelyn
Rm 2405, Unit 1, Buiding 1, Taiyin Tower jianghan Econmic Development Zone, Wuhan, Hubei
| test items | specifications | results | |||
| appearance | white crystals or crystalline powder | conforms | |||
| specific rotation | **1.3 o ~ + *7.0 o | **3.0 o | |||
| state of solution (transmittance) |
clear & colorless e*8.0% |
*9.3% | |||
| chloride(cl) | d0.*4% | <0.*4% | |||
| ammonium(nh 4 ) | d0.*2% | <0.*2% | |||
| sulfate(so 4 ) | d0.*3% | <0.*2% | |||
| iron (fe) | d*0ppm | <5ppm | |||
| heavy metals (pb) | d*0ppm | <*0ppm | |||
| arsenic (as) | d1ppm | <1ppm | |||
| other amino acids | chromatographically not detectable | not detected | |||
| loss on drying | d0.*0% | 0.*0% | |||
| residue on ignition | d0.*0% | 0.*4% | |||
| melting range | **6~**0 o c | **7~**9 o c | |||
| assay | *8.5~**1.0% | **0.1% | |||
| ph | 2.0 ~ 2.8 | 2.3 |
2. N-acetyl-cysteine has been used as a liver protectant and to break up pulmonary and bronchial mucus.
3. N-acetyl-cysteine can boost glutothione levels in cells.
