Physical and chemical properties and hazard characteristics
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Chinese name |
Hydrogen peroxide solution |
English name |
Hydrogen peroxide |
Dangerous goods number |
51001 |
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Molecular formula |
H2O2 |
Molecular weight |
34.01 |
UN number |
2015 |
CAS number |
7722-84-1 |
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Hazard Category |
Class 5.1 Oxidizer | |||||||||||||
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Physical and chemical properties |
Colorless |
transparent liquid with a slight odor | ||||||||||||
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Melting point (°C) |
-2 |
Critical pressure (Mpa) |
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Boiling point (°C) |
158 |
Relative density (water = 1) |
1.46（无水） |
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Saturated vapor pressure (kpa) |
0.13（15.3℃） |
Relative density (air = 1) |
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Critical temperature (°C) |
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Heat of combustion (KJ·mol-1) |
meaningless |
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Solubility |
Soluble in water, alcohol, ether, insoluble in benzene, petroleum ether | |||||||||||||
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Burning explosion hazard |
Burning |
Not burning |
Flash point (°C) |
Meaningless |
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Explosion limit (%) |
Meaningless |
Minimum ignition energy (MJ) |
Meaningless |
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Ignition temperature (°C) |
Meaningless |
Maximum explosion pressure (Mpa) |
Meaningless |
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Dangerous characteristic |
Explosive strong oxidizer. Hydrogen peroxide itself is not flammable, but it can cause a large amount of heat and oxygen in the reaction of combustibles to cause a fire explosion. The pH of hydrogen peroxide is most stable at 3.5 to 4.5, and it is easily decomposed in an alkaline solution, and can be decomposed in the presence of strong light, especially wave radiation. When heated above 100 ° C, a sharp decomposition begins. It forms an explosive mixture with many organic substances, such as sugar, starch, alcohols, petroleum products, etc., and can explode under impact, heat or spark. When contacted with many inorganic compounds or impurities, hydrogen peroxide decomposes rapidly and causes an explosion, releasing a large amount of heat, oxygen and water vapor. Most heavy metals (such as iron, copper, silver, lead, mercury, zinc, cobalt, nickel, chromium, manganese, etc.) and their oxides and salts are active catalysts, dust, cigarette ash, carbon powder, rust, etc. Accelerate decomposition. Hydrogen peroxide at a concentration of more than 74% produces a gas phase explosion in a closed vessel with a suitable ignition source or temperature. | |||||||||||||
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Fire fighting methods |
Firefighters must wear full-body fire-fighting protective clothing; move the container from the fire to the open space as much as possible. Spray water to cool the fire container until the end of the fire. If the container in the fire has changed color or produces sound in a safety relief device, it must be evacuated immediately.Extinguishing agent: water, misty water, dry powder, sand. | |||||||||||||
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Taboo |
Flammable or combustible, strong reducing agent, copper, iron, iron salt, zinc, active metal powder |
stability |
stability |
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Burning product |
Polymerization hazard |
No aggregation |
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Toxicity and health hazards |
Acute toxicity |
LD50（mg/kg，大鼠经口） |
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LD50（mg/kg） |
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Health hazard |
Workshop hygiene standard |
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| Route of invasion: inhalation, ingestion;Inhalation of this product vapor or mist is very irritating to the respiratory tract. Direct contact with the eye can cause irreversible damage or even blindness. Oral poisoning has abdominal pain, chest pain, dyspnea, vomiting, temporary exercise and sensory disturbance, and elevated body temperature. Individual cases have visual impairment, epilepsy, convulsions, and so on.Prolonged exposure to this product can cause contact dermatitis. | ||||||||||||||
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first aid |
皮Skin contact: Immediately remove contaminated clothing and rinse with plenty of water;Eye contact: Immediately lift eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes.Inhalation: quickly leave the site to fresh air, keep the airway open, such as breathing difficulties, give oxygen; if the breathing stops, immediately take artificial respiration and seek medical attention;Ingestion: Drink plenty of warm water, induce vomiting, and seek medical attention. | |||||||||||||
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Protection |
工Remote control: the production process is closed, fully ventilated, providing safe shower and eyewash equipment;Respiratory system protection: Wear self-priming filter respirators (full face mask) when exposed to vapors;Eye and eye protection: protection in the respiratory system;Body protection: wear polyethylene anti-virus suits;Hand protection: with neoprene gloves;
Other: smoking is prohibited in the workplace. Work over the shower and change clothes, pay attention to personal hygiene. |
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Leakage treatment |
Quickly evacuate personnel from the spill area to the safe area, and conduct isolation, strictly restrict access. It is recommended that emergency personnel wear self-supplemented positive pressure breathing apparatus, wear acid and alkali protective overalls, cut off the leakage source as much as possible, and prevent entry into sewers, flood drains, etc. space;Small amount of leakage: absorbed by sand, vermiculite or other inert materials. It can also be washed with a large amount of water. The washing water is diluted and discharged into the wastewater system.A large number of leaks: building dikes or digging pits; spray water to cool and dilute the steam, protect the site personnel, and dilute the spill into incombustibles. Transfer to a tank truck or special collector with a pump, recycle or transport to a waste disposal site for disposal. | |||||||||||||
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Storage and transportation |
Store in a cool, well-ventilated area away from fire and heat. The temperature in the warehouse should not exceed 30 °C. Protect from direct sunlight. Keep the container sealed. It should be stored separately from combustibles, combustibles, reducing agents, acids, metal powders, etc., and should not be mixed and mixed. Lightly load and unload during handling to prevent damage to packaging and containers. Summer should be transported in the morning and evening to prevent sun exposure. It is forbidden to hit and oscillate. | |||||||||||||