If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
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For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
1.02047
Calcium hydroxide
for analysis EMSURE® ACS,Reag. Ph Eur
Synonym(s):
Calcium hydroxide
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
500 g | Estimated to ship onOctober 14, 2026 | $89.10 |
1 kg | Estimated to ship TODAY | $133.00 |
50 kg | Estimated to ship onNovember 30, 2026 | $3,880.00 |
About This Item
grade
ACS reagent
Quality Segment
agency
reag. Ph. Eur.
product line
EMSURE®
assay
≥96.0% (acidimetric)
form
solid
potency
7340 mg/kg LD50, oral (Rat)
impurities
≤0.03% Substances insoluble in hydrochloric acid
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
anion traces
carbonate (CO32-): ≤3.0% (as CaCO3), chloride (Cl-): ≤0.005%, sulfur compounds (as SO42-): ≤0.1%
cation traces
Fe: ≤0.05%, K: ≤0.05%, Mg: ≤0.5%, Na: ≤0.05%, Sr: ≤0.05%, heavy metals (as Pb): ≤0.003%
storage temp.
2-30°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
Application
- Synthesis and utilization of polyol-modified high specific surface area Ca(OH)(2): This research explores the enhanced properties of calcium hydroxide when modified for high surface area applications, crucial for environmental and material science applications, particularly in pollution control and advanced material composites. (Yan et al., 2024).
Analysis Note
Substances insoluble in hydrochloric acid: ≤ 0.03 %
Carbonate (as CaCO₃): ≤ 3.0 %
Chloride (Cl): ≤ 0.005 %
Sulfur compounds (as SO₄): ≤ 0.1 %
Heavy metals (as Pb): ≤ 0.003 %
Fe (Iron): ≤ 0.05 %
K (Potassium): ≤ 0.05 %
Mg (Magnesium): ≤ 0.5 %
Na (Sodium): ≤ 0.05 %
Sr (Strontium): ≤ 0.05 %
Conforms ACS, Reag. Ph. Eur.
Other Notes
Legal Information
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Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class
13 - Non Combustible Solids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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hello Can i know the size of calcium hydroxide? like mesh size. I want to know about size of particle. (ex. 20um)
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The particle size of this product has not been determined.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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