位置:首页 > 品牌 > Sigma-Aldrich >
产品介绍:

产品说明

一般描述

Citric acid monohydrate is an organic acid. Its molar enthalpy of solution in water has been reported to be ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061 ± 123)Jmol-1

应用

Citric acid monohydrate may be used in the diltiazem hydrochloride (drug) and melt extruded Eudragit RS PO (polymer) formulations. It improves the solubility of drug in the polymer matrix. It may be used to prepare citrate buffer for use in the intravital microscopic studies of adhesion and aggregation of platelets.

基本信息

线性分子式HOC(COOH)(CH2COOH)2 · H2O
分子量210.14
Beilstein4018641
EC 号201-069-1
MDL编号MFCD00149972
PubChem化学物质编号57648219
NACRESNA.21

产品性质

质量水平200
等级puriss.
测定99.5-100.5% (based on anhydrous substance)
形式grit
质量meets analytical specification of Ph. Eur., BP, USP, E330
杂质 residual solvents, complies
≤0.0005% heavy metals (as Pb)
7.5-8.8% water (Karl Fischer)
灼烧残渣≤0.05% (as SO4)
pKa (1) 3.13, (2) 4.76, (3) 6.4
痕量阴离子chloride (Cl-): ≤50 mg/kg
oxalate (as oxalic acid): ≤100 mg/kg
sulfate (SO42-): ≤100 mg/kg
痕量阳离子As: ≤1 mg/kg
Ca: ≤200 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤10 mg/kg
适用性complies for appearance of solution
complies for identity (IR)
complies for reaction against H2SO4
SMILES stringOC(CC(O)(C(O)=O)CC(O)=O)=O.O
InChI1S/C6H8O7.H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);1H2
InChI keyYASYEJJMZJALEJ-UHFFFAOYSA-N

安全信息

象形图GHS07
警示用语:Warning
危险声明H319
预防措施声明P305 + P351 + P338
危险分类Eye Irrit. 2
储存分类代码11 - Combustible Solids
WGKWGK 1
闪点(F)345.0 °F
闪点(C)173.9 ℃
个人防护装备dust mask type N95 (US), Eyeshields, Gloves

Sigma-Aldrich

推荐产品
| 首页 | 联系我们 | 会员服务 | 广告服务 | 友情链接 |
版权所有 CopyRight © 2008-2024 粤ICP备08119708号