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Merck

30755

Acide perchlorique

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 70.0-72.0%

Synonyme(s) :

PCA

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A propos de cet article

Formule linéaire :
HClO4
Numéro CAS:
Poids moléculaire :
100.46
UNSPSC Code:
12352106
PubChem Substance ID:
MDL number:
Assay:
70.0-72.0%
Form:
liquid
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agency

USP/NF, reag. ISO, reag. Ph. Eur.

grade

ACS reagent, puriss. p.a.

assay

70.0-72.0%

form

liquid

impurities

≤0.00005% free chlorine (Cl), ≤0.0001% heavy metals (as Pb), ≤0.001% total nitrogen (N)

ign. residue

≤0.003% (as SO4)

density

1.670 g/cm3

anion traces

chlorate (ClO3-): ≤10 mg/kg, chloride (Cl-): ≤3 mg/kg, phosphate, silicate (as SiO2): ≤5 mg/kg, sulfate (SO42-): ≤10 mg/kg

SMILES string

OCl(=O)(=O)=O

cation traces

Ag: ≤0.1 mg/kg, Al: ≤0.05 mg/kg, As: ≤0.05 mg/kg, Ba: ≤0.02 mg/kg, Be: ≤0.02 mg/kg, Bi: ≤0.1 mg/kg, Ca: ≤0.5 mg/kg, Cd: ≤0.05 mg/kg, Co: ≤0.05 mg/kg, Cu: ≤0.1 mg/kg, Fe: ≤1 mg/kg, Ge: ≤0.05 mg/kg, K: ≤0.1 mg/kg, Li: ≤0.02 mg/kg, Mg: ≤0.5 mg/kg, Mn: ≤0.02 mg/kg, Mo: ≤0.05 mg/kg, Ni: ≤0.1 mg/kg, Pb: ≤0.05 mg/kg, Sr: ≤0.02 mg/kg, Ti: ≤0.1 mg/kg, Tl: ≤0.05 mg/kg, V: ≤0.05 mg/kg, Zn: ≤0.1 mg/kg, Zr: ≤0.1 mg/kg

InChI

1S/ClHO4/c2-1(3,4)5/h(H,2,3,4,5)

InChI key

VLTRZXGMWDSKGL-UHFFFAOYSA-N

General description

Perchloric acid (HClO4) is a strong mineral acid. It has powerful oxidizing and dehydrating properties when it is hot and concentrated. It is commercially available in a concentration of 70% (by weight) in water. Aqueous solution of HClO4 is regarded as a super acid (stronger than sulfuric and nitric acids), but it is not necessarily a powerful oxidizer.

Application

Perchloric acid can be used:      
  • In the synthesis of graphite oxide via electrochemical oxidation of natural graphite.      
  • As a reaction medium in oxidations reactions.     
  • As 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.

It can also be used in the following:      
  • Silica-supported perchloric acid (HClO4-SiO2) is used as a catalyst to synthesize amidoalkyl naphthols by the condensation reaction of 2-naphthol, aromatic aldehydes, and acetonitrile.      
  • HClO4-SiO2 is used in the Friedlander quinoline synthesis by the condensation reaction of 2-aminoaryl ketones and carbonyl compounds.      
  • Alumina-supported perchloric acid (Al2O3-HClO4) is used as a catalyst in the synthesis of α-(α-amidobenzyl)-β-naphthols.



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Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 1 - Skin Corr. 1A - STOT RE 2

target_organs

Thyroid

Classe de stockage

5.1A - Strongly oxidizing hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable



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