Perchloric acid
SIGALD/30755 - puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 70.0-72.0%
Synonym: PCA
CAS Number: 7601-90-3
Empirical Formula (Hill Notation): HClO4
Molecular Weight: 100.46
MDL Number: MFCD00011325
Linear Formula: HClO4
Product Type: Chemical
| agency | reag. ISO |
| reag. Ph. Eur. | |
| USP/NF | |
| anion traces | chlorate (ClO3-): ≤10 mg/kg |
| chloride (Cl-): ≤3 mg/kg | |
| phosphate, silicate (as SiO2): ≤5 mg/kg | |
| sulfate (SO42-): ≤10 mg/kg | |
| assay | 70.0-72.0% |
| 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 | |
| density | 1.670 g/cm3 |
| form | liquid |
| grade | ACS reagent |
| puriss. p.a. | |
| ign. residue | ≤0.003% (as SO4) |
| impurities | ≤0.00005% free chlorine (Cl) |
| ≤0.0001% heavy metals (as Pb) | |
| ≤0.001% total nitrogen (N) | |
| InChI | 1S/ClHO4/c2-1(3,4)5/h(H,2 |
| InChI key | VLTRZXGMWDSKGL-UHFFFAOYSA |
| SMILES string | OCl(=O)(=O)=O |
| 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-napht |
| 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. |
| Packaging: | 1 L in glass bottle |
| Symbol |     GHS03,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H271 - H290 - H302 - H314 - H373 |
| Precautionary statements | P210 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P305 + P351 + P338 + P310 - P314 |
| Hazard Codes | O,C |
| Risk Statements | 5-8-22-35 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 1873 8(5.1) / PGI |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 70.0-72.0% |
| Density | 1.670 g/cm3 |
| UNSPSC | 12352106 |