1.02111

Calcium hydroxide

for the preparation of DIN 19266 pH standard buffer solutions

• 别名: Calcium hydroxide
• 线性分子式: Ca(OH)₂
• CAS号: 1305-62-0
• 分子量: 74.09
• MDL號碼: MFCD00010901
• 分類程式碼代碼: 12352305
• 酶委員會索引編號: 215-137-3
• NACRES: NA.24

属性

• 等級: analytical standard
• 品質等級: 100
• agency: complies with DIN 19266
• 效力: 7340 mg/kg LD₅₀, oral (Rat)
• pH值: 12.6 (20 °C in H₂O, saturated solution)
• mp: 550 °C (decomposition)
• 溶解度: 1.7 g/L
• 密度: 2.24 g/cm³ at 20 °C
• 體積密度: 400 kg/m³
• 應用: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• 格式: mixture
• 儲存溫度: 15-25°C
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
• InChI 密鑰: AXCZMVOFGPJBDE-UHFFFAOYSA-L

说明

一般說明

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.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

應用

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.

分析報告

pH-value (25°C): 12.43 - 12.47

安全信息

• 象形圖: GHS05,GHS07
• 訊號詞: Danger
• 危險聲明: H315 - H318 - H335
• 防範說明: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• 危險分類: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• 標靶器官: Respiratory system
• 儲存類別代碼: 13 - Non Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable