Calcium hydroxide

Ca(OH)₂

74.09

MFCD00010901

215-137-3

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.

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.

pH-value (25°C): 12.43 - 12.47

100

analytical standard

complies with DIN 19266

7340 mg/kg LD₅₀, oral (Rat)

12.6 (20 ℃ in H₂O, saturated solution)

550 ℃ (decomposition)

1.7 g/L

2.24 g/cm³ at 20 ℃

400 kg/m³

environmental
food and beverages
general analytical
industrial qc
pharmaceutical

mixture

15-25℃

1S/Ca.2H2O/h;2*1H2/q+2;;/p-2

AXCZMVOFGPJBDE-UHFFFAOYSA-L

GHS05,GHS07

Danger

H315 - H318 - H335

P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3

Respiratory system

13 - Non Combustible Solids

WGK 1