Melting point :>300 °C (lit.)
Boiling point :214.32°C (rough estimate)
Density :1.58 g/cm3 at 25 °C
vapor pressure :<0.01 mm Hg ( 20 °C)
refractive index :1.5100 (estimate)
Flash point :260°C
storage temp. :Sealed in dry,Room Temperature
solubility :15mg/l (experimental)
form :Crystalline Powder
pka :3.51(at 25℃)
color :White
PH :3.36(1 mM solution);2.79(10 mM solution);2.26(100 mM solution)
Water Solubility :slightly soluble in water (0,017 g/L at 25°C)
Merck :14,9162
BRN :1909333
Exposure limits :ACGIH: TWA 10 mg/m3
Dielectric constant :1.5（Ambient）
Stability :Stable. Combustible. Incompatible with strong oxidizing agents.
LogP :2 at 25℃
CAS DataBase Reference :100-21-0(CAS DataBase Reference)
EPA Substance Registry System :Terephthalic acid (100-21-0)

Symbol(GHS):
Signal word:	Danger
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. 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. P321 Specific treatment (see … on this label). P332+P313 IF SKIN irritation occurs: Get medical advice/attention. P337+P313 IF eye irritation persists: Get medical advice/attention. P405 Store locked up.