1.02111

Calcium hydroxide

for the preparation of DIN 19266 pH standard buffer solutions

• Sinônimo(s): Calcium hydroxide
• Fórmula linear: Ca(OH)₂
• Número CAS: 1305-62-0
• Peso molecular: 74.09
• Número MDL: MFCD00010901
• Código UNSPSC: 12352305
• Número do índice EC: 215-137-3
• NACRES: NA.24

Propriedades

• grau: analytical standard
• Nível de qualidade: 100
• Agency: complies with DIN 19266
• potência: 7340 mg/kg LD₅₀, oral (Rat)
• pH: 12.6 (20 °C in H₂O, saturated solution)
• pf: 550 °C (decomposition)
• solubilidade: 1.7 g/L
• densidade: 2.24 g/cm³ at 20 °C
• densidade volumétrica: 400 kg/m³
• aplicação(ões): environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• formato: mixture
• temperatura de armazenamento: 15-25°C
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
• chave InChI: AXCZMVOFGPJBDE-UHFFFAOYSA-L

Descrição

Descrição geral

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.

Aplicação

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.

Nota de análise

pH-value (25°C): 12.43 - 12.47

Informações de segurança

• Pictogramas: GHS05,GHS07
• Palavra indicadora: Danger
• Frases de perigo: H315 - H318 - H335
• Declarações de precaução: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classificações de perigo: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• Órgãos-alvo: Respiratory system
• Código de classe de armazenamento: 13 - Non Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable