亚洲欧美日韩成人一区久久,欧美日韩国产综合在线,国产香蕉97碰碰视频,欧美1000部长发一级黄色,亚洲午夜精品无在线观看,一个舔B一个3人个人换着玩,色欲av人妻精品一区二区直播,国产亚洲一级黄色视频开始播放,国产农村特黄真人一级毛片

Home | 中文版
About UsProductsQualityFactoryOrderContact Us

Products

Putrescine Dihydrochloride
Product name: Putrescine Dihydrochloride
Molecular formula: C4H12N2·2HCL
CAS NO.: 333-93-7
Package: 25kg/drum
Batch No.: P20060521
CERTIFICATE OF ANALYSIS
Items Specification Results
Appearance White needles crystalline Pass
Assay(Cl)% ≥98.5% 99.7%
Solubility(1.0g in 50ml H2O) Clear Pass
Loss on drying % ≤0.5% 0.2%
Residue on ignition% ≤0.2 0.18
Sulfate(SO4)% ≤0.020% 0.010%
Arsenic(AS2O3)ppm ≤10 Pass
Heavy metals(Pb)ppm ≤10 Pass
Storage & Shelf life 2 years in original sealed container, cool, dry place.
Scan Contact Us
Copyright(C)2018, Changzhou Aide Biology Technology Co., Ltd. All Rights Reserved. Supported by ChinaChemNet ChemNet Toocle Copyright Notice 備案序號:蘇ICP備06002541號