产品说明
一般描述
Tungstic acid may be prepared by either digesting tungstate of lime or by treating tungsten with hydrochloric acid. 1
包装
100, 500 g in poly bottle
基本信息
| 线性分子式 | H2WO4 |
| 分子量 | 249.85 |
| EC 号 | 231-975-2 |
| MDL编号 | MFCD00011336 |
| PubChem化学物质编号 | 57653679 |
| NACRES | NA.23 |
产品性质
| 质量水平 | 200 |
| 测定 | ≥98.0% (calcined substance, T) |
| 形式 | powder |
| 杂质 | ≤0.2% insoluble matter in NaOH |
| 缺失 | ≤9.0% loss on ignition |
| 密度 | 5.5 g/mL at 25 ℃ (lit.) |
| SMILES string | O[W](O)(=O)=O |
| InChI | 1S/2H2O.2O.W/h2*1H2;;;/q;;;;+2/p-2 |
| InChI key | CMPGARWFYBADJI-UHFFFAOYSA-L |
安全信息
| 象形图 |  |
| 警示用语： | Warning |
| 危险声明 | H315 - H319 - H335 |
| 预防措施声明 | P302 + P352 - P305 + P351 + P338 |
| 危险分类 | Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3 |
| 靶器官 | Respiratory system |
| 储存分类代码 | 13 - Non Combustible Solids |
| WGK | WGK 3 |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
| 个人防护装备 | Eyeshields, Gloves, type N95 (US) |
Sigma-Aldrich
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