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Hydrobromic acid 48%
|ADR||UN1788 II Class 8 LQ 1L|
- Buy 5 and save 5%
Hydrobromic acid refers to the solutions of gaseous hydrogen bromide (HBr) in water. Like the other hydrogen halides, the solutions are strongly acidic.
In chemical symbolism, HBr means both the gas and the aqueous solution. Where a distinction or a more accurate characterization of the aqueous solution is required, the abbreviation (aq) is used for designations such as e.g. B. HBr(aq), HBr·aq, HBr aq or HBraq.
Hydrobromic acid behaves similarly to the chemically related hydrochloric acid. Like the gaseous hydrogen chloride HCl, the colorless gas HBr dissolves readily in water, whose solubility at standard pressure for HBr decreases with increasing water temperature.
At room temperature, this gives an aqueous solution containing up to 65 percent HBr (mass fraction) and a density of 1.7675 g/cm 3 . Commercial solutions are 40-65%. HBr and water (such as HCl) form a positive azeotrope at 47.63% HBr and 52.37% H2O boiling at 126°C; the density of this solution is 1.482 g/cm 3 . This ratio can no longer be changed at the azeotropic point by simple distillation, since the liquid and gas phases have the same composition. The 48% constant boiling acid is 8.89 molar.
Empirical formula HBr
Molar mass (M) 80.91 g/mol
Density approx. 1.48
ADR 8 II • WGK 1
H290 May be corrosive to metals.
H314 Causes severe skin burns and eye damage.
H335 May cause respiratory irritation.
P280 Wear protective gloves/ protective clothing/ eye protection/ face
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated
clothing. Rinse skin with water.
P305 + P351 + P338 +
IF IN EYES: Rinse cautiously with water for several minutes.
Remove contact lenses, if present and easy to do. Continue
rinsing. Immediately call a POISON CENTER/doctor.