Perchloric acid

Melting point :−17 °C (1 °F; 256 K) (72% aqueous solution); −112 °C (anhydrous)
Boiling point :203 °C (397 °F; 476 K) (azeotrope); 75 °C (anhydrous, decomposition)
Density :1.768 g/cm3
vapor density :~2.1 (vs air)
vapor pressure :6.8 mm Hg ( 25 °C)
refractive index :1.419
Flash point :Non-flammable
storage temp. :Flammables area
solubility :Water (Sparingly)
pka :-7[at 20 ℃]
form :liquid
color :colorless
Specific Gravity :approximate 1.54
Odor :Odorless
PH :0.1 (H2O, 20°C)
Water Solubility :Miscible with water.
Thermal Conductivity :0.192 W/(m·K)
Merck :14,7153
Henry's Law Constant :9.9×10³ mol/(m³Pa) at 25℃, Jaeglé et al. (1996)
Stability :Stable. Avoid heat. May form explosive peroxides. Incompatible with a wide variety of substances, including organic materials, alcohols, amines, strong acids, strong bases, acid anhydrides, finely powdered metals, strong reducing agents. Contact with wood, paper and other celullose products may lead to explosion, as may contact with a vari
InChI :1S/ClHO4/c2-1(3,4)5/h(H,2,3,4,5)
InChIKey :VLTRZXGMWDSKGL-UHFFFAOYSA-N
SMILES :OCl(=O)(=O)=O
LogP :-4.62
CAS DataBase Reference :7601-90-3(CAS DataBase Reference)
NIST Chemistry Reference :Perchloric acid(7601-90-3)
EPA Substance Registry System :Perchloric acid (7601-90-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H271 May cause fire or explosion; strong oxidiser Oxidising liquids;Oxidising solids Category 1 Danger P210, P220, P221, P280, P283,P306+P360, P371+P380+P375,P370+P378, P501 H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P314 Get medical advice/attention if you feel unwell.