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Physicochemical Information
Density	2.240 g/cm3 (20 °C)
Melting Point	>=450 °C (decomposition)
pH value	12.6 (H₂O, 20 °C) (saturated solution)
Bulk density	400 kg/m3
Solubility	1.7 g/l

Toxicological Information
LD 50 oral	LD50 Rat 7340 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H315: Causes skin irritation. H318: Causes serious eye damage. H335: May cause respiratory irritation.
Precautionary Statement(s)	P261: Avoid breathing dust. P264: Wash skin thoroughly after handling. P271: Use only outdoors or in a well-ventilated area. P280: Wear protective gloves/ eye protection/ face protection. P302 + P352: IF ON SKIN: Wash with plenty of water. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word	Danger
RTECS	EW2800000
Storage class	10 – 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).

Safety Information
Categories of danger	irritant

Storage and Shipping Information
Storage	Store at +2°C to +30°C.

Specifications
Assay (acidimetric)	≥ 96.0 %
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.

Merck 102047 1000 Calcium Hydroxide Gr For Analysis 1 KG.