Melting point :140-142 °C (lit.)
Boiling point :295.67°C (rough estimate)
Density :1.5216 (rough estimate)
refractive index :1.6280 (estimate)
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :DMSO (Slightly), Methanol (Slightly)
form :Powder
pka :4.99±0.14(Predicted)
color :light yellow
Sensitive :Air Sensitive
BRN :2047884
Henry's Law Constant :9.4×10⁰ mol/(m³Pa) at 25℃, Schwarzenbach et al. (1988)
InChI :InChI=1S/C7H5NO4/c9-4-5-1-2-7(10)6(3-5)8(11)12/h1-4,10H
InChIKey :YTHJCZRFJGXPTL-UHFFFAOYSA-N
SMILES :C(=O)C1=CC=C(O)C([N+]([O-])=O)=C1
CAS DataBase Reference :3011-34-5(CAS DataBase Reference)
NIST Chemistry Reference :4-Hydroxy-3-nitrobenzaldehyde(3011-34-5)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405 Store locked up.