1.02111

Calcium hydroxide

for the preparation of DIN 19266 pH standard buffer solutions

• Sinonimo/i: Calcium hydroxide
• Formula condensata: Ca(OH)₂
• Numero CAS: 1305-62-0
• Peso molecolare: 74.09
• Numero MDL: MFCD00010901
• Codice UNSPSC: 12352305
• Numero indice EU: 215-137-3
• NACRES: NA.24

Proprietà

• Grado: analytical standard
• Livello qualitativo: 100
• agenzia: complies with DIN 19266
• Potenza: 7340 mg/kg LD₅₀, oral (Rat)
• pH: 12.6 (20 °C in H₂O, saturated solution)
• Punto di fusione: 550 °C (decomposition)
• Solubilità: 1.7 g/L
• Densità: 2.24 g/cm³ at 20 °C
• Densità bulk: 400 kg/m³
• applicazioni: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• Formato: mixture
• Temperatura di conservazione: 15-25°C
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2; AXCZMVOFGPJBDE-UHFFFAOYSA-L

Descrizione

Descrizione generale

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.

Applicazioni

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.

Risultati analitici

pH-value (25°C): 12.43 - 12.47

Informazioni sulla sicurezza

• Pittogrammi: GHS05,GHS07
• Avvertenze: Danger
• Indicazioni di pericolo: H315 - H318 - H335
• Consigli di prudenza: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classi di pericolo: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• Organi bersaglio: Respiratory system
• Codice della classe di stoccaggio: 13 - Non Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable