Hydrobromic acid

Chinese name：氢溴酸

Molecular formula：BrH

Molecular weight：80.91

Recommended and restricted uses: it is used to manufacture inorganic bromide and organic bromide, as analytical reagent, catalyst and reducing agent.

Hazard overview:

Emergency overview: it is highly corrosive. It burns immediately with H foaming agent. It can produce highly toxic hydrogen cyanide gas with cyanide. It can react violently with alkali metals, corrode most metals and form extremely flammable hydrogen. It can cause skin and mucous membrane irritation or burns.

GHS hazard category:

According to the chemical classification, warning label and warning instruction specification series standards, the product belongs to metal corrosion, category 1;

Skin corrosion / irritation, category 1A;

Severe eye injury / eye irritation, category 1;

Acute toxicity - inhalation, category 3;

Specific target organ systemic toxicity, repeated exposure, category 2

Label elements:

Pictogram:

Warning words: danger

Hazard information: corrosive metal; Cause serious skin burns and eye damage; Cause serious eye damage; Inhalation can cause poisoning; Long term or repeated exposure can cause organ damage.

Precautions:

The production process is closed and fully ventilated, and safety shower and eye washing equipment are provided

Wear filter gas mask

Wear safety glasses

Wear anti-static work clothes

Wear latex gloves

Smoking is strictly prohibited at the work site and good hygiene habits should be developed

Keep away from heat sources, sparks, open flames and hot surfaces, and operate with tools that are not easy to corrode

Use explosion-proof electrical appliances, ventilation, lighting and other equipment

Avoid contact during pregnancy and lactation

Avoid breathing volatile gases

Accident response:

Skin contact: take off contaminated clothes immediately and rinse with plenty of flowing water for at least 15 minutes. See a doctor.

Eye contact: lift the eyelids immediately and rinse thoroughly with a large amount of flowing water or normal saline for at least 15 minutes. See a doctor.

Inhalation: quickly leave the site to a place with fresh air to keep the respiratory tract unobstructed. If breathing is difficult, give oxygen,

If breathing stops, perform artificial respiration immediately. Do not use mouth-to-mouth artificial respiration. Use unidirectional small respirator or other appropriate medical respirator for medical treatment.

Ingestion: rinse your mouth with water and drink milk or egg white. See a doctor.

Safe storage:

Store in a cool and ventilated warehouse, away from fire and heat source, with the warehouse temperature not exceeding 30 ℃ and the relative humidity not exceeding 85%; Keep the container sealed and store it separately from inflammable (combustible), alkali and active metal powder. Do not store it together. The storage area shall be equipped with leakage emergency treatment equipment and appropriate receiving materials, which shall be kept by a specially assigned person.

Waste disposal:

After neutralization and dilution, it enters the sewage system for subsequent treatment.

Physical and chemical hazards: strong corrosivity; Immediately burn in case of H foaming agent; In case of cyanide, it can produce highly toxic hydrogen cyanide gas. In case of alkali metal, it can react violently and corrode most metals to form extremely flammable hydrogen.

Health hazard: the minimum toxic concentration inhaled by people is 5ppm. This product can cause skin and mucous membrane irritation or burns; Long term low concentration exposure can cause respiratory tract irritation and digestive dysfunction.

Environmental hazards: no data

Composition / composition information:

Substance

Mixture

Hazardous components

Concentration

Hydrogen bromide

48-62 (mass fraction%)

First aid measures:

Skin contact: take off contaminated clothes immediately and rinse with plenty of flowing water for at least 15 minutes. See a doctor.

Eye contact: lift the eyelids immediately and rinse thoroughly with a large amount of flowing water or normal saline for at least 15 minutes. See a doctor.

Inhalation: quickly leave the site to a place with fresh air, keep the respiratory tract unobstructed, and give oxygen if breathing is difficult.

If breathing stops, perform artificial respiration immediately. Do not use mouth-to-mouth artificial respiration. Use one-way valve small respirator or other appropriate medical respirator for medical treatment.

Ingestion: rinse your mouth with water and drink milk or egg white. See a doctor.

Fire fighting measures:

Special risk: strong corrosivity; Immediately burn in case of H foaming agent; In case of cyanide, it can produce highly toxic hydrogen cyanide gas, and in case of alkali metal, it can react violently

Fire extinguishing method and extinguishing agent: This product is non combustible

Precautions and measures for fire extinguishing: not involved

Emergency treatment of leakage:

Protective measures, protective equipment and emergency disposal procedures for operators: it is recommended that emergency personnel wear positive pressure air respirator, corrosion-resistant chemical protective clothing and rubber acid-base resistant gloves. The equipment and tools used during operation should be corrosion-resistant materials, cut off the leakage source as far as possible, and delimit the warning area according to liquid flow and steam diffusion, Irrelevant personnel shall evacuate from the crosswind or upwind direction.

Environmental protection measures: collect the leakage, avoid environmental pollution, prevent the leakage from directly entering the sewer, surface water and groundwater, the storage and removal methods of chemicals and the disposal materials used.

Small leakage: mix with sand, dry lime or soda ash; It can also be washed with a large amount of water and diluted into the wastewater system.

Massive leakage: build a dike or dig a pit for reception. Transfer to tank car or special collector by pump, recycle or transport to waste treatment site for disposal.

Handling and storage:

Precautions for operation: operators must receive special training, strictly abide by the operating procedures, and the operation site must have comprehensive or local ventilation facilities. Avoid contact with eyes and skin, avoid inhalation of steam, stay away from fire and heat sources, prohibit fireworks in the workplace, use explosion-proof equipment and facilities, take measures to prevent electrostatic accumulation in material pipelines, and equip corresponding fire-fighting equipment and leakage emergency treatment equipment. It is recommended that operators wear filter type gas-proof half mask, safety goggles and latex gloves.

Storage precautions: store in a cool and ventilated warehouse, away from kindling and heat source, with the warehouse temperature not exceeding 30 ℃ and relative humidity not exceeding 85%; Keep the container sealed and store it separately from inflammable (combustible), alkali and active metal powder. Do not store it together. The storage area shall be equipped with leakage emergency treatment equipment and appropriate receiving materials.

Personal protection for controlled exposure:

Occupational exposure limit: hydrogen bromide: MAC (mg / M) ³） 10 (standard source: gb2.1-2007)

PC- TWA（mg/m ³） There is no standard # pc-stel (mg / M ³） No standard is established

Unlimited biological data

Monitoring method: None

Engineering control:

Closed operation prevents volatile gas from entering the workplace

Strengthen ventilation to keep the concentration of hydrogen bromide in the air less than the occupational exposure limit

Provide safety shower and eye wash equipment

Set automatic alarm device and emergency ventilation device

Set up necessary emergency passages and risk relief areas

Set red area warning lines, warning signs and warning instructions in Chinese, and set up communication alarm system.

Respiratory protection: generally, no special protection is required. In case of high concentration, it is necessary to wear filter type anti-virus half mask. In case of emergency rescue or evacuation, it is necessary to wear positive pressure air respirator

Eye protection: safety goggles are required

Skin and body protection: wear corrosion resistant protective clothing..

Hand protection: wear latex gloves.

Other protection: smoking, eating and drinking are prohibited at the work site; Shower and change clothes after work; Store clothes contaminated by poisons separately and use them for standby after washing; Keep good hygiene habits

Physical and chemical properties:

Appearance and properties: colorless or light yellow liquid, slightly smoky, with pungent sour taste.

PH value: no data available; melting point / freezing point (℃): - 66.5 (pure product)

Boiling point, initial boiling point and boiling range (℃): 126 (47%) density (g / L): 1720 (4 ℃) (58%)

Relative vapor density (air = 1) solid or liquid that is difficult to volatilize # relative density (water = 1): 1.49 (47%)

Heat of combustion (kJ / mol): meaningless; saturated vapor pressure (kPa): no data

Critical pressure (MPA): meaningless; critical temperature (℃): meaningless

Flash point (℃): incombustible matter octanol / water partition coefficient: no data

Decomposition temperature: no data; ignition temperature (℃): meaningless

Upper explosive limit% (V / V): noncombustible substance; lower explosive limit% (V / V): noncombustible substance

Flammability: non combustible

Solubility: miscible with water, miscible with alcohol and acetic acid.

Stability and reactivity:

Stability: stable

Prohibited substances: alkali, ammonia, active metal powder, flammable or combustible substances

Conditions to avoid contact: humid air

Dangerous reaction: it can react with common metals and release hydrogen to form explosive mixture with air. In case of H foaming agent, it will burn immediately. In case of cyanide, it can produce highly toxic hydrogen cyanide gas.

Hazardous decomposition product: hydrogen bromide

Toxicological information:

Acute toxicity: LD50: 76 mg / kg (rat vein) LC50: 9460 mg / m3, 1 hour (rat inhalation); 2694mg / m3, 1 hour (inhaled by mice)

Skin irritation or corrosion: can cause serious skin burns

Eye irritation or corrosion: can cause eye damage

Respiratory or skin allergy: irritation to respiratory tract

Germ cell mutagenicity: no data

Carcinogenicity: no data

Reproductive toxicity: no data

Specific target organ systemic toxicity - one exposure: no data

Specific target organ systemic toxicity - repeated exposure: no data

Inhalation hazard: irritating to respiratory tract

Ecological information:

Persistence and degradability: no data available

Potential bioaccumulation: no data available

Mobility: no data

Waste disposal:

Product: after neutralization and dilution, it is discharged into the boiling water system

Unclean packaging: it is recommended to contact the manufacturer and return the empty container to the manufacturer; Or dispose according to national and local regulations.

Precautions for waste disposal: refer to national and local regulations for waste disposal, and refer to part VIII for the safety protection of disposal personnel.

Transportation information:

United Nations dangerous goods number (UN): 1788

UN transport Name: hydrobromic acid

United Nations hazard classification: category 8 corrosive substances

Packing category: II

Package mark: corrosive substance

Packing method: ordinary wooden case or semi lattice wooden case outside the glass bottle or plastic barrel (can), ordinary wooden case outside the frosted glass bottle or threaded glass bottle, ordinary wooden case outside the ampoule bottle, threaded glass bottle, iron cap crimped glass bottle, plastic bottle or ordinary wooden case outside the metal barrel (can).

Marine pollutants (yes / no): Yes

Precautions for transportation: during railway transportation, the dangerous goods shall be loaded in strict accordance with the dangerous goods loading table in the dangerous goods transportation rules of the Ministry of railways. The package shall be complete and the loading shall be stable at the time of shipment. During transportation, ensure that the container does not leak, collapse, fall or damage. It is strictly prohibited to mix with combustibles or combustibles, alkalis, active metal powder, edible chemicals, etc. During transportation, the transport vehicle shall be equipped with leakage emergency treatment equipment. During transportation, it shall be protected from sun exposure, rain and high temperature. During highway transportation, drive according to the specified route, and do not stay in residential areas and densely populated areas.