半岛bd体育手机客户端 说明
一般描述
Benzoic acid is an aromatic monocarboxylic acid. It occurs in the form of colorless leaflets or needles. It reacts with hydrogenating reagents to afford hexahydrobenzoic acid. On decomposition (by heating) in the presence of lime or alkali, it affords benzene and carbon dioxide. It can be synthesized by the cobalt or manganese catalyzed atmospheric oxidation of toluene.
应用
Benzoic acid may be employed as a standard in the quantitative and calorimetric studies. It may be employed as an intermediate in the synthesis of the following:
基本信息
| 线性分子式 | C6H5COOH |
| 分子量 | 122.12 |
| Beilstein | 636131 |
| EC 号 | 200-618-2 |
| MDL编号 | MFCD00002398 |
| PubChem化学物质编号 | 57647710 |
半岛bd体育手机客户端 性质
| 质量水平 | 200 |
| 蒸汽密度 | 4.21 (vs air) |
| 蒸汽压 | 10 mmHg ( 132 ℃) |
| 测定 | 99.5-100.5% (alkalimetric) |
| 形式 | crystalline |
| 自燃温度 | 1061 °F |
| 质量 | meets analytical specification of Ph. Eur., BP, USP, FCC, E210 |
| 杂质 | oxidisable substances, complies residual solvents, complies ≤0.0005% heavy metals (as Pb) ≤0.03% halogen compounds (as Cl) ≤0.7% water (Karl Fischer) |
| 灼烧残渣 | ≤0.05% (as SO4) |
| 缺失 | ≤0.5% loss on drying, 3 h (via H2SO4) |
| pH值(酸碱度) | 3-5 (20 ℃, 0.1%) |
| bp | 249 ℃ (lit.) |
| mp | 121-125 ℃ (lit.) |
| 溶解性 | water: soluble (2.9 g/l at 25 ℃) |
| 痕量阳离子 | As: ≤3 mg/kg Cu: ≤10 mg/kg Hg: ≤1 mg/kg Pb: ≤2 mg/kg Zn: ≤20 mg/kg |
| 适用性 | complies for appearance of solution complies for reaction against H2SO4 |
| SMILES string | OC(=O)c1ccccc1 |
| InChI | 1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9) |
| InChI key | WPYMKLBDIGXBTP-UHFFFAOYSA-N |
安全信息
| 象形图 |   |
| 警示用语： | Danger |
| 危险声明 | H315 - H318 - H372 |
| 预防措施声明 | P260 - P264 - P280 - P302 + P352 - P305 + P351 + P338 - P314 |
| 危险分类 | Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation |
| 靶器官 | Lungs |
| 储存分类代码 | 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects |
| WGK | WGK 1 |
| 个人防护装备 | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
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