239232

Calcium hydroxide

ACS reagent, ≥95.0%

• Formula condensata: Ca(OH)₂
• Numero CAS: 1305-62-0
• Peso molecolare: 74.09
• Numero CE: 215-137-3
• Numero MDL: MFCD00010901
• Codice UNSPSC: 12352305
• ID PubChem: 329752521
• NACRES: NB.24

Proprietà

• Grado: ACS reagent
• Livello qualitativo: 200
• Saggio: ≥95.0%
• Stato: powder
• Impurezze: ≤0.03% insol. in HCl; ≤0.1% S compounds; ≤3.0% calcium carbonate
• pH: 12.4-12.6 (20 °C)
• Densità: 2.24 g/mL at 25 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤0.03%
• Cationi in tracce: Fe: ≤0.05%; K: ≤0.05%; Mg: ≤0.5%; Na: ≤0.05%; Sr: ≤0.05%; heavy metals: ≤0.003% (by ICP)
• Stringa SMILE: O[Ca]O
• InChI: 1S/Ca.2H2O/h;2*1H2/q+2;;/p-2; AXCZMVOFGPJBDE-UHFFFAOYSA-L

Descrizione

Descrizione generale

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.

Applicazioni

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.

Informazioni sulla sicurezza

• Pittogrammi: GHS05,GHS07
• Avvertenze: Danger
• Indicazioni di pericolo: H315,H318,H335
• Consigli di prudenza: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classi di pericolo: Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
• Organi bersaglio: Respiratory system
• Codice della classe di stoccaggio: 13 - Non Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable