1.02111

Calcium hydroxide

for the preparation of DIN 19266 pH standard buffer solutions

• 別名: Calcium hydroxide
• 化学式: Ca(OH)₂
• CAS番号: 1305-62-0
• 分子量: 74.09
• MDL番号: MFCD00010901
• UNSPSCコード: 12352305
• EC Index Number: 215-137-3
• NACRES: NA.24

特性

• グレード: analytical standard
• 品質水準: 100
• 認証: complies with DIN 19266
• 有効性: 7340 mg/kg LD₅₀, oral (Rat)
• pH: 12.6 (20 °C in H₂O, saturated solution)
• mp: 550 °C (decomposition)
• 溶解性: 1.7 g/L
• 密度: 2.24 g/cm³ at 20 °C
• かさ密度: 400 kg/m³
• アプリケーション: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• フォーマット: mixture
• 保管温度: 15-25°C
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
• InChI Key: AXCZMVOFGPJBDE-UHFFFAOYSA-L

詳細

詳細

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.

アプリケーション

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.

アナリシスノート

pH-value (25°C): 12.43 - 12.47

安全性情報

• ピクトグラム: GHS05,GHS07
• シグナルワード: Danger
• 危険有害性情報: H315 - H318 - H335
• 注意書き: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• 危険有害性の分類: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• ターゲットの組織: Respiratory system
• 保管分類コード: 13 - Non Combustible Solids
• WGK: WGK 1
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable