产品说明
一般描述
The pH buffer standards are measured and qualified using differential potentiometry with two platinum hydrogen electrodes. This method allows the comparison of the reference buffers to the corresponding primary reference materials by PTB (Physical Technical Institute, Germany) and NIST (National Institute of Standards and Technology, USA). Uncertainty data and traceability are documented in a comprehensive, batch-specific Certificate of Analysis.
应用
For the preparation of DIN 19266 pH standard buffer solutions.
Calcium hydroxide (calcium dihydroxide or Ca(OH)2) is a reference buffer solution used to calibrate pH electrodes and pH instruments.
分析说明
pH-value (25°C): 12.43 - 12.47
基本信息
| 线性分子式 | Ca(OH)2 |
| 分子量 | 74.09 |
| MDL编号 | MFCD00010901 |
| EC索引号 | 215-137-3 |
产品性质
| 质量水平 | 100 |
| 等级 | analytical standard |
| agency | complies with DIN 19266 |
| 效能 | 7340 mg/kg LD50, oral (Rat) |
| pH值(酸碱度) | 12.6 (20 ℃ in H2O, saturated solution) |
| mp | 550 ℃ (decomposition) |
| 溶解性 | 1.7 g/L |
| 密度 | 2.24 g/cm3 at 20 ℃ |
| 堆积密度 | 400 kg/m3 |
| application(s) | environmental food and beverages general analytical industrial qc pharmaceutical |
| 格式 | mixture |
| 储存温度 | 15-25℃ |
| InChI | 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2 |
| InChI key | AXCZMVOFGPJBDE-UHFFFAOYSA-L |
安全信息
| 象形图 |   |
| 警示用语： | Danger |
| 危险声明 | H315 - H318 - H335 |
| 预防措施声明 | P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338 |
| 危险分类 | Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3 |
| 靶器官 | Respiratory system |
| 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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