基本信息
线性分子式 | Na2S2O3· 5H2O |
分子量 | 248.18 |
EC 号 | 231-867-5 |
MDL编号 | MFCD00149186 |
PubChem化学物质编号 | 329750194 |
NACRES | NA.21 |
半岛bd体育手机客户端 性质
等级 | puriss. |
质量水平 | 200 |
测定 | 99.0-100.5% (USP, dry basis) 99.0-101.0% (EP) |
形式 | crystalline |
质量 | meets analytical specification of Ph. Eur., BP, USP |
杂质 | residual solvents, complies ≤0.0005% heavy metals (as Pb) |
缺失 | 32-37% loss on drying, 16 h (vacuum) |
pH值(酸碱度) | 6.0-8.4 (20 ℃, 10%) |
痕量阴离子 | sulfate, sulfite (as SO42-): ≤2000 mg/kg sulfide (S2-): in accordance |
痕量阳离子 | As: ≤3 mg/kg Ca: ≤50 mg/kg Fe: ≤10 mg/kg |
适用性 | complies for appearance of solution |
SMILES string | O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=S |
InChI | 1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2 |
InChI key | PODWXQQNRWNDGD-UHFFFAOYSA-L |
安全信息
储存分类代码 | 13 - Non Combustible Solids |
WGK | WGK 1 |
闪点(F) | Not applicable |
闪点(C) | Not applicable |
Sigma-Aldrich