Bromine

Bromine (Bromum, VG) is a chemical element VII groups of periodic system of D. I. Mendeleev. Sequential number 35, atomic weight 79,909, valence - 1, +3. Free bromine (Br) is a heavy red-brown volatile liquid with a sharp suffocating odor. A pair of bromine poisonous; liquid bromine raseduse effect on the skin.
Saturated aqueous solution of bromine (bromine water) used in laboratory practice. Salt Hydrobromic acid NWG used as a sedative and neuroleptic funds (see Bromides).

Poisoning bromine. Inhalation negligible amounts of bromine arise cough, nasal bleeding, sometimes vomiting, diarrhea. Inhalation of significant quantities - asthma, bronchitis, it can be fatal.
First aid and treatment: calm, heat, flush mucous membranes with a 2% solution of baking soda, codeine, dionin, intravenous infusion of 40% solution of glucose (20 ml). You need long-term care even in the period of imaginary well-being (possible pulmonary edema), mandatory bed rest. When injected liquid bromine with skin wash affected area with water, smeared with ointment containing sodium bicarbonate.
Prevention of poisoning: sealing of production equipment, exhaust systems, the use of individual protection (respirators marks and B, rubber gloves , and others).
Maximum permissible concentration of bromine 0,002 mg/L.
Cm. also Brominated hydrocarbons.

Bromine (Bromum; Br) - chem. item VII groups, subgroups of free periodic system of D. I. Mendeleev. Sequential number 35; atomic weight 79,910; valence-1, +5, +1; has two stable isotope Br79 and Br81. Is in the nature mainly in the form of compounds with metals in marine and some lake water, as well as in soils, plants, animals and man. Bromine - red-brown volatile liquid with a pungent smell; beats. century 3,102 (25oC); temperature plasma is 7.3 C; temperature instrumentation 58,78 degrees; at 20oC in 100 g of water-soluble 3.58 g bromide; it is soluble in alcohol, ether, carbon disulfide, chloroform, benzene. Bromine is a strong oxidizer; with hydrogen produces hydrogen bromide, aqueous solution of which is called Hydrobromic acid - NWG. Combinations of chemical elements with bromine called bromides. Bromides metals are salts in aqueous solutions produces ions Br-. Reactions opening ion battery Br-1) oxidation of bromide to BYR2 (yellow-brown colour of the solution), 2) precipitation in the form of AgBr. Bromates - salt Bronevoi acid HBrO3- oxidants are, have toxic effects on the animals.
Bromine contained in the human body in all tissue fluids, in the pituitary gland, blood, adrenal glands, thyroid gland. Bromides easily absorbed and excreted slowly, mainly with urine. The bromide of potassium and sodium are used for medical purposes as sedatives (see Bromide). Inhalation of fumes bromine contained in the air is about 0,001% causes a cough, runny nose, nasal bleeding, dizziness, headache; in higher concentrations - asthma, bronchitis, death. Maximum permissible concentration of bromine in the air - 0,002 mg/L. the Liquid bromine is on the skin, causing poor healing of the ulcer.