Melting point :163-166 °C (lit.)
Boiling point :390 °C
Density :1.54
vapor density :6.6 (vs air)
vapor pressure :<0.01 mm Hg ( 20 °C)
refractive index :1.4717 (estimate)
Flash point :227 °C
storage temp. :Store below +30°C.
solubility :24.4g/l (decomposition)
form :Flakes
pka :3.11±0.20(Predicted)
color :White to off-white
PH :2 (21g/l, H2O, 20℃)
explosive limit :1-7%(V)
Water Solubility :DECOMPOSES
Sensitive :Moisture Sensitive
Merck :14,9703
BRN :9394
Exposure limits :ACGIH: TWA 0.0005 mg/m3; STEL 0.002 mg/m3 (Skin)
NIOSH: TWA 0.005 ppm(0.04 mg/m3) Stability :Stable. Moisture sensitive.
InChIKey :SRPWOOOHEPICQU-UHFFFAOYSA-N
LogP :0.06-0.54 at 20℃
CAS DataBase Reference :552-30-7(CAS DataBase Reference)
NIST Chemistry Reference :Trimellitic anhydride(552-30-7)
EPA Substance Registry System :Trimellitic anhydride (552-30-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 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. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.