60370

Idrossido di potassio

puriss. p.a., ≥86% (T), pellets

• Sinonimo/i: Soda caustica
• Formula condensata: KOH
• Numero CAS: 1310-58-3
• Peso molecolare: 56.11
• Numero CE: 215-181-3
• Numero MDL: MFCD00003553
• Codice UNSPSC: 12352106
• eCl@ss: 38100303
• ID PubChem: 329758915
• NACRES: NA.21

Proprietà

• Tensione di vapore: 1 mmHg ( 719 °C)
• Livello qualitativo: 100
• Grado: puriss. p.a.
• Saggio: ≥86% (T)
• Forma fisica: pellets
• Impurezze: ≤0.0005% total nitrogen (N); ≤0.6% potassium carbonate (K₂CO₃)
• pH: ~13.5 (25 °C, 5.6 g/L)
• Punto di fusione: 361 °C (lit.)
• Solubilità: alcohol: soluble(lit.); water: soluble(lit.)
• Anioni in tracce: chloride (Cl^-): ≤50 mg/kg; phosphate (PO₄^3-): ≤5 mg/kg; silicate (as SiO₂): ≤5 mg/kg; sulfate (SO₄^2-): ≤40 mg/kg
• Cationi in tracce: Ag: ≤5 mg/kg; Al: ≤5 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Hg: ≤0.1 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤5000 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• Stringa SMILE: [OH-].[K+]
• InChI: 1S/K.H2O/h;1H2/q+1;/p-1; KWYUFKZDYYNOTN-UHFFFAOYSA-M

Descrizione

Descrizione generale

Potassium hydroxide (KOH, Caustic potash) is a base. It is a water absorbing, colorless solid having rhombic crystals. It has been synthesized by reacting potassium carbonate with calcium hydroxide. It is widely employed for the manufacture of dyes and pigments. Pulverized KOH may be used for the preparation of chalcones.

Applicazioni

Potassium hydroxide (KOH) may be employed for the following studies:

• As an etching agent for the laser modified silica glass. It selectively facilitates etching on exposure to femtosecond laser.
• As a catalyst for the transformation of palm oil along with methanol to methyl esters, via transesterification reaction.
• Preparation of potassium hydroxide catalyst supported on palm shell activated carbon, which is used for the transesterification of palm oil.
• To improve the catalytic efficacy of X, Y and ZSM (Zeolite Socony Mobil)-5 zeolites during the synthesis of methyl methacrylate.

Altre note

Reagent for the decomposition of silicates by fusion

Informazioni sulla sicurezza

• Pittogrammi: GHS05,GHS07
• Avvertenze: Danger
• Indicazioni di pericolo: H290,H302,H314
• Consigli di prudenza: P234 - P260 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Classi di pericolo: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Codice della classe di stoccaggio: 8A - Combustible corrosive hazardous materials
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable