Melting point :152-153 °C(lit.)
Density :1.71[at 20℃]
vapor pressure :0Pa at 25℃
storage temp. :Inert atmosphere,Room Temperature
solubility :soluble in DMSO
form :Crystalline Powder
color :Orange to brown
Water Solubility :soluble
Sensitive :Hygroscopic
Exposure limits :OSHA: Ceiling 0.1 mg/m3
NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3 InChI :1S/2C5H5N.2Cr.2H2O.5O/c2*1-2-4-6-5-3-1;;;;;;;;;/h2*1-5H;;;2*1H2;;;;;/q;;2*+1;;;;;;;/p-2
InChIKey :BNSOYWDFFBDEFB-UHFFFAOYSA-L
SMILES :c1ccncc1.c2ccncc2.O[Cr](=O)(=O)O[Cr](O)(=O)=O
LogP :-3.7 at 20℃
CAS DataBase Reference :20039-37-6(CAS DataBase Reference)
EPA Substance Registry System :Chromic acid (H2Cr2O7), compd. with pyridine (1:2) (20039-37-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H228 Flammable solid Flammable solids Category 1 Category 2 Danger Warning P210, P240,P241, P280, P370+P378 H272 May intensify fire; oxidizer Oxidising liquids;Oxidising solids Category 2 Category 3 Danger Warning P210, P220, P221P280, P370+P378,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 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.