1.02111
Calcium hydroxide
for the preparation of DIN 19266 pH standard buffer solutions
别名:
Calcium hydroxide
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关于此项目
线性分子式:
Ca(OH)2
化学文摘社编号:
分子量:
74.09
UNSPSC Code:
12352305
EC Index Number:
215-137-3
NACRES:
NA.24
MDL number:
grade
analytical standard
Quality Segment
agency
complies with DIN 19266
potency
7340 mg/kg LD50, oral (Rat)
pH
12.6 (20 °C in H2O, saturated solution)
mp
550 °C (decomposition)
solubility
1.7 g/L
density
2.24 g/cm3 at 20 °C
bulk density
400 kg/m3
application(s)
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
format
mixture
storage temp.
15-25°C
SMILES string
[Ca+2].[O-H].[O-H]
InChI
1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
InChI key
AXCZMVOFGPJBDE-UHFFFAOYSA-L
General description
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.
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.
Application
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.
Calcium hydroxide (calcium dihydroxide or Ca(OH)2) is a reference buffer solution used to calibrate pH electrodes and pH instruments.
Analysis Note
pH-value (25°C): 12.43 - 12.47
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警示词
Danger
Hazard Classifications
Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
靶器官
Respiratory system
存储类别
13 - Non Combustible Solids
怎么回事？
WGK 1
闪点 (F)
Not applicable
闪点 (°C)
Not applicable