239232

Calcium hydroxide

ACS reagent, ≥95.0%

• Formule linéaire : Ca(OH)₂
• CAS Number: 1305-62-0
• Poids moléculaire : 74.09
• Numéro CE : 215-137-3
• Numéro MDL: MFCD00010901
• Code UNSPSC : 12352305
• ID de substance PubChem : 329752521
• Nomenclature NACRES : NB.24

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Essai: ≥95.0%
• Forme: powder
• Impuretés: ≤0.03% insol. in HCl; ≤0.1% S compounds; ≤3.0% calcium carbonate
• pH: 12.4-12.6 (20 °C)
• Densité: 2.24 g/mL at 25 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤0.03%
• Traces de cations: Fe: ≤0.05%; K: ≤0.05%; Mg: ≤0.5%; Na: ≤0.05%; Sr: ≤0.05%; heavy metals: ≤0.003% (by ICP)
• Chaîne SMILES: O[Ca]O
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
• Clé InChI: AXCZMVOFGPJBDE-UHFFFAOYSA-L

Description

Description générale

Calcium hydroxide is commonly used in wastewater treatment plants (WWTPs) to adjust pH. Calcium hydroxide has numerous applications due to its strong basic characteristics. Uses include flocculants in water and sewage treatment, a whitewash ingredient, soil improvement, as a lye substitute in non-lye hair relaxers, and in the liming industry to neutralize the acid.

Application

Calcium hydroxide can be used:

• In the pretreatment of technical lignin during the pyrolysis in a fluidized bed reactor to overcome the agglomeration to produce phenolic-rich bio-oil.
• As a catalyst in the pyrolysis of pinewood in a fixed bed reactor.

Informations sur la sécurité

• Pictogrammes: GHS05,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H315,H318,H335
• Conseils de prudence: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classification des risques: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• Organes cibles: Respiratory system
• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable