1.02111

Calcium hydroxide

for the preparation of DIN 19266 pH standard buffer solutions

• Sinónimos: Calcium hydroxide
• Fórmula lineal: Ca(OH)₂
• Número de CAS: 1305-62-0
• Peso molecular: 74.09
• Número MDL: MFCD00010901
• Código UNSPSC: 12352305
• Número índice de la CE: 215-137-3
• NACRES: NA.24

Propiedades

• grado: analytical standard
• Nivel de calidad: 100
• Agency: complies with DIN 19266
• potencia: 7340 mg/kg LD₅₀, oral (Rat)
• pH: 12.6 (20 °C in H₂O, saturated solution)
• mp: 550 °C (decomposition)
• solubilidad: 1.7 g/L
• densidad: 2.24 g/cm³ at 20 °C
• densidad aparente: 400 kg/m³
• aplicaciones: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• formato: mixture
• temp. de almacenamiento: 15-25°C
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
• Clave InChI: AXCZMVOFGPJBDE-UHFFFAOYSA-L

Descripción

Descripción general

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.

Aplicación

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 análisis

pH-value (25°C): 12.43 - 12.47

Información de seguridad

• Pictogramas: GHS05,GHS07
• Palabra de señalización: Danger
• Frases de peligro: H315 - H318 - H335
• Consejos de prudencia: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Clasificaciones de peligro: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• Órganos de actuación: Respiratory system
• Código de clase de almacenamiento: 13 - Non Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable