国产精品亚洲第一区焦香味,偷偷鲁偷偷鲁综合网站,9孩岁女被A片自慰免费观看,免费无码又爽又刺激高潮视频日本

Nanjing Qingbei Technology Co., Ltd.
 
 
Biological buff
Biochemical rea
Quaternary ammo
Diagnosis chrom
Fine chemicals
Apis
 

Tel: +86-25-57027380
Fax: +86-25-58196375
Email: sales@njqbio.com
URL: m.zpskzw.cn

 
TMB
Code QB2012
Product Name 3,3',5,5'-Tetramethylbenzidine
CAS RN 54827-17-7
EINECS No. 259-364-6
Molecular formula C16H19N
Molecular weight 225.3288
Dangerous mark  Xi:Irritant
Risk term R36/37/38;
Security term S26S36;
Physical and chemical properties

Melting point : 168 - 169 ℃ 

Water solubility: <0.1 g/100 mL at 20 C 

Appearance: white to off-white crystalline powder 

Uses  
3,3',5,5'-四甲基聯(lián)苯胺
Back >>
Home  |  About us  |  Products  |  Style  |  Honors  |   Online  |  Contact us  |  中文版   [Admin]
Copyright(C)2014, Nanjing Qingbei Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice