4-Hydroxybenzoic acid

Melting point :213-217 °C (lit.)
Boiling point :213.5°C (rough estimate)
Density :1,46 g/cm³
bulk density :600kg/m3
vapor pressure :0Pa at 20℃
refractive index :1.4600 (estimate)
FEMA :3986 | 4-HYDROXYBENZOIC ACID
Flash point :199 °C
storage temp. :Store below +30°C.
solubility :methanol: soluble5%, clear to slightly hazy, colorless to faintly yellow
pka :4.48(at 19℃)
form :Crystalline Powder
color :White to ivory
PH :3.3 (1g/l, H2O, 20℃)
Odor :at 100.00 %. phenolic nutty
Odor Type :phenolic
biological source :synthetic
Water Solubility :5 g/L (20 ºC)
Merck :14,4812
JECFA Number :957
BRN :970950
Henry's Law Constant :1.4×10⁶ mol/(m³Pa) at 25℃, Duchowicz et al. (2020)
Cosmetics Ingredients Functions :PRESERVATIVE
FRAGRANCE Cosmetic Ingredient Review (CIR) :4-Hydroxybenzoic acid (99-96-7)
InChI :1S/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)
InChIKey :FJKROLUGYXJWQN-UHFFFAOYSA-N
SMILES :OC(=O)c1ccc(O)cc1
LogP :0.878 at 22℃
CAS DataBase Reference :99-96-7(CAS DataBase Reference)
NIST Chemistry Reference :Benzoic acid, 4-hydroxy-(99-96-7)
EPA Substance Registry System :p-Hydroxybenzoic acid (99-96-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 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. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P403+P233 Store in a well-ventilated place. Keep container tightly closed.