311421

Perchloric acid

70%, 99.999% trace metals basis

• Synonym(s): PCA
• Linear Formula: HClO₄
• CAS Number: 7601-90-3
• Molecular Weight: 100.46
• MDL number: MFCD00011325
• UNSPSC Code: 12352302
• PubChem Substance ID: 24858523
• NACRES: NA.22

Properties

• vapor pressure: 6.8 mmHg ( 25 °C)
• Quality Level: 100
• Assay: 70%; 99.999% trace metals basis
• form: liquid
• reaction suitability: reagent type: oxidant
• concentration: ≥70-- < 90%
• bp: ca.203 °C/at 1.013 hPa
• mp: 18 °C
• solubility: water: miscible (completely)
• density: 1.664 g/mL at 25 °C
• cation traces: Al: ≤0.3 ppm; Ca: ≤0.3 ppm; Fe: ≤ 0.1 ppm; Na: 3.1 ppm; Zn: ≤ 0.1 ppm
• SMILES string: OCl(=O)(=O)=O
• InChI: 1S/ClHO4/c2-1(3,4)5/h(H,2,3,4,5)
• InChI key: VLTRZXGMWDSKGL-UHFFFAOYSA-N

Description

Application

Perchloric acid (HClO₄) can be used in the preparation of:

• Silica supported perchloric acid (HClO₄-SiO₂) which is used as a catalyst in geminal diacylation of aldehydes, synthesis of amidoalkyl naphthols, primary carbamates, and tetrasubstituted imidazoles.
• Alumina supported perchloric acid (Al₂O₃-HClO₄), which is used as a catalyst in the synthesis of α-(α-amidobenzyl)-β-naphthols.
• Fe₃O₄@SiO₂-HClO₄ catalyst, which is used in the synthesis of 1,4-dihydropyridine derivatives.

Perchloric acid can be used as:      

•   A reaction medium in oxidation reactions.       
• A reagent for the preparation of fluorinated polymer electrolytes using poly (vinylidenefluoride-cohexafluoropropylene) (PVDF-HFP) for fuel cell applications.        
• A dopant in the preparation of perchloric acid-functionalized polyaniline (HClO₄/PANI) catalyst for the synthesis of 2-substituted benzothiazoles by condensation reaction between o-aminothiophenol with aldehydes.

Safety Information

• Pictograms: GHS03,GHS08,GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H271,H290,H302,H314,H373
• Precautionary Statements: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338 - P314
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 1 - Skin Corr. 1A - STOT RE 2
• Target Organs: Thyroid
• Storage Class Code: 5.1A - Strongly oxidizing hazardous materials
• WGK: WGK 1
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves