Melting point :-91 °C (lit.)
Boiling point :123-125 °C/20 mmHg (lit.)
Density :1.015 g/mL at 25 °C (lit.)
vapor density :3.2 (vs air)
refractive index :n20/D 1.445(lit.)
Flash point :>230 °F
storage temp. :Sealed in dry,Room Temperature
solubility :Chloroform (Soluble), DMSO (Slightly), Methanol (Slightly)
form :Oil
pka :14.51±0.10(Predicted)
color :Colourless
Odor :little to no odor
BRN :1731422
Henry's Law Constant :6.9×10² mol/(m³Pa) at 25℃, Wang et al. (2017)
Cosmetics Ingredients Functions :SOLVENT
Cosmetic Ingredient Review (CIR) :2-METHYL-1,3-PROPANEDIOL (2163-42-0)
InChI :1S/C4H10O2/c1-4(2-5)3-6/h4-6H,2-3H2,1H3
InChIKey :QWGRWMMWNDWRQN-UHFFFAOYSA-N
SMILES :CC(CO)CO
LogP :-0.740 (est)
CAS DataBase Reference :2163-42-0(CAS DataBase Reference)
NIST Chemistry Reference :Propane-1,3-diol, 2-methyl-(2163-42-0)
EPA Substance Registry System :1,3-Propanediol, 2-methyl- (2163-42-0)

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:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. 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. P321 Specific treatment (see … on this label). P332+P313 IF SKIN irritation occurs: Get medical advice/attention. P362 Take off contaminated clothing and wash before reuse.