Calcium hydroxide

Molecular Structure of Calcium hydroxide (CAS NO.1305-62-0):

IUPAC Name: calcium dihydroxide
Empirical Formula: H₂CaO₂
Molecular Weight: 74.0927
H bond acceptors: 2
H bond donors: 2
Freely Rotating Bonds: 2
Polar Surface Area: 40.46 Å²
EINECS: 215-137-3
Stability: Stable. Incompatible with strong acids
Melting Point: 580 °C
Boiling Point: 2850 °C
density: 2.24 g/mL at 25 °C(lit.)
Storage temp: Store at RT.
Water Solubility: 1.65 g/L (20 ^oC)
Sensitiv:e: Air Sensitive
Merck: 14,1673
InChI
InChI=1/Ca.2H2O/h;2*1H2/q+2;;/p-2/rCaH2O2/c2-1-3/h2-3H
Smiles
[Ca](O)O
Product Categories: Inorganics; C-D, Puriss p.a.; Analytical Reagents for General Use; Puriss p.a.; Chemical Synthesis; Inorganic Bases; Synthetic Reagents; AlgicidesMetal and Ceramic Science; Calcium Salts; Pesticides; Pesticides&Metabolites; Salts; ACS GradeChemical Synthesis; Essential Chemicals; Routine Reagents

1、Calcium hydroxide (CAS NO.1305-62-0) is used in the separation of sugar from sugar cane in the sugar industry and in the processing of Norwegian lutefisk.It also used for clearing a brine of carbonates of calcium and magnesium in the manufacture of salt for food and pharmacopoeia.
2、In dentistry, it is used as dressing in paste form used for anti-microbial effect during a dental root canal procedure. Calcium hydroxide is known to have a strong anti-microbial effect and is a bone-regeneration stimulant.
3、Calcium hydroxide(CAS NO.1305-62-0) is used as an acid suppressor in the production of metals. Lime is injected into the waste gas stream to neutralise acids such as fluorides and chlorides prior to being released to atmosphere.
4、In the beauty industry, used in relaxers for permanently straightening very curly hair.

 Calcium hydroxide (CAS NO.1305-62-0) is reported in EPA TSCA Inventory.

Hazard Codes:  Xi,C
Risk Statements:  41-34
R41:Risk of serious damage to the eyes. 
R34:Causes burns.
Safety Statements:  26-39-45-36/37/39-27
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S39:Wear eye / face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S27:Take off immediately all contaminated clothing.
RIDADR:  3262
WGK Germany:  1
RTECS:  EW2800000
F:  34
HazardClass:  8
PackingGroup:  III
Mildly toxic by ingestion. A severe eye irritant. A skin, mucous membrane, and respiratory system irritant. Mutation data reported. Causes dermatitis. Dust is considered to be a significant industrial hazard. A common air contaminant. Violent reaction with maleic anhydride, nitroethane, nitromethane, nitroparaffins, nitropropane, phosphorus. Reaction with polychlorinated phenols + potassium nitrate forms extremely toxic products.

OSHA PEL: TWA 5 mg/m³
ACGIH TLV: TWA 5 mg/m³

For occupational chemical analysis use NIOSH: Calcium, 7020; Elements, 7300.

  Calcium hydroxide , with CAS number of 1305-62-0, can be called agriculturallime;Bell mine ; bellmine ; biocalc ; Ca(OH)₂ ; Calcium hydroxide (Ca(OH)₂) ; calciumhydroxide(Ca(OH)₂) ; calciumhydroxidechemicallime . Fire Fighting Measures of Calcium hydroxide (CAS NO.1305-62-0): General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is nonflammable. Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. Handling and Storage of Calcium hydroxide (CAS NO.1305-62-0): Handling: Avoid breathing dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Storage: Store in a cool, dry place. Store in a tightly closed container. Do not expose to air.