半岛bd体育手机客户端 说明
一般描述
Magnesium sulfate heptahydrate is the hydrated salt of magnesium. The spin-Hamiltonian parameters of the (Cu(H2O)6)2+complex in magnesium sulfate heptahydrate have been determined by electron spin resonance (ESR) spectral studies. Raman spectra of 10 hydrated and anhydrous forms of magnesium sulfates have been reported. Their crystal structure and space groups have been evaluated by Raman and XRD (X-ray diffraction) studies.
基本信息
| 线性分子式 | MgSO4· 7H2O |
| 分子量 | 246.47 |
| EC 号 | 231-298-2 |
| MDL编号 | MFCD00149785 |
| eCl@ss | 38030409 |
| PubChem化学物质编号 | 329750022 |
| NACRES | NA.21 |
半岛bd体育手机客户端 性质
| 质量水平 | 200 |
| 蒸汽密度 | <0.01 (vs air) |
| 蒸汽压 | <0.1 mmHg ( 20 ℃) |
| 测定 | 99.5-100.5% (calc. to the dried substance) |
| 形式 | powder or crystals |
| 质量 | meets analytical specification of Ph. Eur., BP,USP, FCC |
| 杂质 | acidity or alkalinity, in accordance organic volatile impurities, complies (GC) residual solvents, complies ≤0.001 ppm heavy metals (as Pb) ≤0.004% free alkali (as MgO) ≤0.01% free acid (as H2SO4) |
| 缺失 | 48.0-52.0% loss on drying, 450 ℃ |
| pH值(酸碱度) | 5.0-9.2 (25 ℃, 5%) |
| 痕量阴离子 | chloride (Cl-): ≤150 mg/kg |
| 痕量阳离子 | As: ≤2 ppm Fe: ≤20 ppm Pb: ≤4 ppm Se: ≤30 ppm |
| 适用性 | complies for appearance of solution |
| SMILES string | O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O |
| InChI | 1S/Mg.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2 |
| InChI key | WRUGWIBCXHJTDG-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 |
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