3.0N Hydrogen bromide

Recommended and restricted uses: as raw materials for the manufacture of organic and inorganic bromides, it is also used for the preparation of catalysts and drugs.

Risk overview:

GHS hazard category: according to the general rules for classification and hazard publicity of chemicals (gb13690-2009) and the series of standards for chemical classification, warning labels and warning instructions: the product belongs to metal corrosion-1, serious eye injury / eye irritation-1, hazard to water environment-acute-1, skin corrosion / irritation-1, acute toxicity-inhalation-4, respiratory or skin allergy respiratory sensitization.

Label elements:

Pictogram:

Warning words: danger

Hazard information: including gas under pressure, which can explode if heated; Corrosive metal; Cause serious eye damage; Cause serious skin burns and eye damage; Harmful by inhalation; Inhalation may cause allergic or asthmatic symptoms or dyspnea; Very toxic to aquatic organisms.

Precautions:

Keep away from heat source and open fire

Store in a cool, ventilated and dry place

Avoid contact with alkali and oxidant

Sealed packaging, do not be affected by moisture

Wear protective gloves, glasses and masks

Avoid contact during pregnancy and lactation

No eating, drinking or smoking is allowed in the workplace

Clean the contact parts of the body thoroughly after operation, and the contaminated work clothes shall not be taken out of the workplace

No discharge into the environment

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 and keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. See a doctor.

Safe storage:

Store in a cool, dry and well ventilated warehouse

The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 85%

Keep away from fire and heat source and prevent direct sunlight

It shall be stored separately from oxidants, alkalis and edible chemicals, and mixed storage shall not be allowed

There should be fire and explosion-proof technical measures

Equipped with corresponding varieties and quantities of fire-fighting equipment

It is forbidden to use mechanical equipment and tools that are easy to produce sparks

The storage area shall be equipped with leakage emergency treatment equipment.

Waste disposal: dispose according to national and local regulations, spray ammonia or other dilute lye for neutralization, dilute and discharge into the wastewater system or contact the manufacturer to determine the disposal method.

Physicochemical hazard: non combustible. It can react with common metals after being affected with moisture and release hydrogen to form an explosive mixture with air. The pure product is relatively stable in air, but it is easy to be oxidized and free of bromine in case of light and heat. Explosive reaction can occur in the presence of bromine and oxygen. It is highly corrosive in case of water.

Health hazard: the minimum toxic concentration inhaled by human is 5ppm. Liquid hydrogen bromide can cause skin and mucous membrane irritation or burns. Long term low concentration exposure can cause respiratory tract irritation and digestive dysfunction. It is poisonous, corrosive, strong irritant and can cause burns to human body.

Chronic effects: long term exposure to high concentrations can cause chronic bronchitis, gastrointestinal dysfunction and dental etching.

Environmental hazard: it is harmful to the environment and can pollute the water body.

Composition / composition information:

Substance

Mixture

Hazardous components

Concentration

Hydrogen bromide

99.9%

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. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. See a doctor.

Ingestion: not exposed through this route

Fire fighting measures:

Special hazard: non combustible. It can react with common metals after being affected with moisture and release hydrogen to form an explosive mixture with air. The pure product is relatively stable in air, but it is easy to be oxidized and free of bromine in case of light and heat. Explosive reaction can occur in the presence of bromine and oxygen. It is highly corrosive in case of water.

Fire extinguishing method and extinguishing agent: This product is non combustible. However, in case of fire caused by contact with other articles, appropriate extinguishing agent can be selected according to the cause of fire.

Precautions and measures for fire fighting: Firefighters must wear filter gas mask (full mask) or isolation respirator, wear full body fire and gas clothing and put out fire in the upwind direction. Cut off the air supply quickly, spray water to protect the personnel who cut off the air supply, and move the container from the fire site to the open place as far as possible. Spray water to keep the containers in the fire site cool until the fire extinguishing is completed.

Emergency treatment of leakage:

Protective measures, protective equipment and emergency disposal procedures for operators.

Quickly evacuate the personnel in the leakage pollution area to the windward, immediately isolate 150m and strictly restrict access. It is recommended that emergency treatment personnel wear self-contained positive pressure respirator and anti-virus clothing. Enter the site from the upwind. Cut off the source of leakage as much as possible. Cover the sewer and other places near the leakage point with industrial covering or adsorption / absorbent to prevent gas from entering.

Storage and removal methods of leaked chemicals and disposal materials used.

Spray ammonia or other dilute lye for neutralization. Build embankments or dig pits to receive a large amount of wastewater. If possible, send the residual gas or leakage gas to the water washing tower or the fume hood connected to the tower by exhaust fan. The leaking container shall be properly handled and reused after repair and inspection.

Handling and storage:

Precautions for operation: strictly seal and provide sufficient local exhaust and comprehensive ventilation. Operators must receive special training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter gas mask (full mask), closed chemical protective clothing and rubber gloves. Prevent gas leakage into the air of the workplace. Avoid contact with alkali and oxidant. Load and unload gently during handling to prevent damage to steel cylinders and accessories. Equipped with leakage emergency treatment equipment.

Storage precautions:

Store in a cool, dry and well ventilated warehouse.

The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 85%.

Keep away from fire and heat source and prevent direct sunlight.

It shall be stored separately from oxidants, alkalis and edible chemicals, and mixed storage shall not be allowed.

There should be fire and explosion-proof technical measures.

Provide corresponding varieties and quantities of fire-fighting equipment.

It is forbidden to use mechanical equipment and tools that are easy to produce sparks.

The storage area shall be equipped with leakage emergency treatment equipment.

Personal protection for controlled exposure:

Occupational exposure limit: MAC (mg / M) ³） 10. MAC of the former Soviet Union (mg / M) ³）： two

TWA（mg/m ³） There is no standard ， STEL (mg / M) ³） No standard is established

Unlimited biological data

Monitoring method: mercuric thiocyanate colorimetry

Engineering control: strictly sealed to provide sufficient local exhaust and comprehensive ventilation. Provide safety shower and eye wash equipment

Respiratory protection: when the concentration in the air exceeds the standard, you must wear a self-priming filter gas mask (full mask). In case of emergency rescue or evacuation, air respirators should be worn.

Eye protection: respiratory protection has been provided.

Skin and body protection: wear closed anti-virus clothing

Hand protection: wear rubber gloves.

Other protection: smoking, eating and drinking are prohibited at the work site. Shower and change clothes after work. Keep good hygiene habits.

Physical and chemical properties:

Appearance and properties: colorless, pungent and pungent gas.

PH value: - 86 ℃ / freezing point

Boiling point, initial boiling point and boiling range (℃): - 66.8 density (g / L): 2238 (- 60 ℃) (liquid)

Relative vapor density (air = 1): 2.71; relative density (water = 1): 2.338 (- 60 ℃) (liquid)

Heat of combustion (kJ / mol): saturated vapor pressure of incombustible substance (kPa): 53.32 (- 78 ℃)

Critical pressure (MPA): 8.51; critical temperature (℃): 90

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

Decomposition temperature: n / A; ignition temperature (℃): n / A

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

Flammability: non combustible

Solubility: easily soluble in water and ethanol

Stability and reactivity:

Stability: stable

Prohibited compounds: oxidants and alkalis

Conditions to avoid contact: high heat, strong light and humid air

Dangerous reaction: it can react with common metals after being affected with moisture, release hydrogen and form explosive mixture with air. The pure product is relatively stable in air, but it is easy to be oxidized and free of bromine in case of light and heat. Explosive reaction can occur in the presence of bromine and oxygen.

Hazardous decomposition products: meaningless

Toxicological information:

Acute toxicity: LD50: no data available; LC50: 2858ppm, 1H (inhaled by rats)

Skin irritation or corrosion: it can stimulate and burn the skin

Eye irritation or corrosion: corrosive to eyes

Respiratory or skin allergy: it has sensitization effect on upper respiratory tract and skin

Germ cell mutagenicity: no data

Carcinogenicity: not listed as carcinogen by IARC.

Reproductive toxicity: no data

Specific target organ systemic toxicity: no data

Inhalation hazard: the minimum toxic concentration of human inhalation is 5ppm

Ecological information:

Ecotoxicity: harmful to aquatic organisms and attention should also be paid to air pollution

Persistence and degradability: no data available

Potential bioaccumulation: no data available

Mobility: no data

Waste disposal:

Waste disposal method:

Products: dispose according to national and local regulations, spray ammonia or other dilute lye for neutralization, dilute and discharge into the wastewater system or contact the manufacturer to determine the disposal method

Unclean packaging: it is recommended to contact the manufacturer and return the empty container to the manufacturer

Precautions for waste disposal: the disposal personnel shall wear protective clothing; Pay attention to environmental protection.

Transportation information:

UN dangerous goods No.: 1048

UN Shipping Name: anhydrous hydrogen bromide

United Nations hazard classification: class 2.3 toxic gas secondary hazard class 8 corrosive substances

Packing category: II

Packaging mark: toxic gas; Corrosive substances

Packing method: steel cylinder

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 safety helmet on the steel cylinder must be worn when the steel cylinder is used for transportation. The steel cylinder is generally placed horizontally, and the bottle mouth should be in the same direction without crossing; The height shall not exceed the protective fence of the vehicle, and shall be firmly clamped with triangular wood cushion to prevent rolling. It is strictly prohibited to mix with edible chemicals and oxidizing agents. In summer, it shall be transported in the morning and evening to prevent sunlight exposure. During highway transportation, it is necessary to drive according to the specified route, and it is forbidden to stay in residential areas and densely populated areas. It is forbidden to slip away during railway transportation.