Melting point :−87 °C(lit.)
Boiling point :−67 °C(lit.)
Density :1.49 g/mL at 25 °C (lit.)
vapor density :2.8 (vs air)
vapor pressure :334.7 psi ( 21 °C)
refractive index :n20/D 1.438
Flash point :40°C
storage temp. :Store below +30°C.
solubility :soluble
pka :-9(at 25℃)
form :Solution
Specific Gravity :1.49
color :Light yellow, brown
Odor :Sharp, irritating odor detectable at 2 ppm
PH :3.01(1 mM solution);2.04(10 mM solution);1.08(100 mM solution)
Water Solubility :soluble
Sensitive :Hygroscopic
Merck :14,4778
BRN :3587158
Exposure limits :Ceiling limit 3 ppm (～10 mg/m³) (ACGIH); TLV-TWA 3 ppm (～10 mg/m³) (MSHA and OSHA).
Dielectric constant :7.0（-85℃）
Stability :Stable. Incompatible with strong bases, strong oxidizing agents, ammonia, ozone, fluorine, water, metals. Air and light sensitive.
LogP :0.629 at 25℃
CAS DataBase Reference :10035-10-6(CAS DataBase Reference)
NIST Chemistry Reference :Hydrogen bromide(10035-10-6)
EPA Substance Registry System :Hydrobromic acid (10035-10-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.