The rod model of trimethylamine is summarized. Trimethylamine is the simplest tertiary amine. At room temperature, it is a colorless gas with a foul smell. It is soluble in water, ethanol and ether, flammable and toxic. Its relative density is (water = 1)0.66(-5℃) and (air = 1). The molecular formula is C3H9N, which can be used as analytical reagent and organic synthesis. Contents [Hidden] Property parameters Chemical properties, health hazards, environmental behavior monitoring and protection monitoring methods Environmental standards, leakage, emergency treatment, protective measures, first-aid fire protection measures, production methods refer to property parameters, chemical properties, health hazards, environmental behavior monitoring and protection monitoring methods, environmental standards, leakage, emergency treatment, protective measures, first-aid fire protection measures, production methods refer to.

[Edit this paragraph] Attribute parameters

GBNo。 2 1045

Si Nuo. 75-50-3

Molecular weight 59. 1 1

Flash point -6.7℃

Melting point-1 17. 1℃

Boiling point 3℃

chemical property

The main structural item of trimethylamine: tertiary amine

Trimethylamine has typical tertiary amine properties, including salt formation and oxidation, and trimethylamine has no reaction in Hisberg reaction. [3][ Edit this paragraph] Invasive routes of health hazards: inhalation, ingestion and percutaneous absorption.

Health hazards: The main hazards to human body are irritation to eyes, nose, throat and respiratory tract. Concentrated trimethylamine aqueous solution can cause severe burning sensation and flushing on the skin, and punctate bleeding can still remain on the skin after washing off the solution. Long-term contact makes eyes, nose and throat dry and uncomfortable.

Environmental behavior

Hazard characteristics: flammable, and its vapor can form an explosive mixture with air. It is easy to cause combustion and explosion in case of open flame and high heat. It decomposes when heated to produce toxic smoke. A violent reaction will occur when it comes into contact with oxidant. Its vapor is heavier than air, and it can spread to a considerable distance at a lower place, which will lead to tempering when it meets an open flame.

Combustion (decomposition) products: carbon monoxide, carbon dioxide and nitrogen oxides. [Edit this paragraph] Monitoring and protection monitoring methods

Laboratory monitoring method

Gas chromatography (GB/T 14676-93, air)

environmental standard

The maximum allowable concentration of harmful substances in the air of workshops in the former Soviet Union is 5mg/m3.

China (GB 14554-93) Factory Boundary Standard for Odor Pollutants (mg/m3) Class I: 0.05; Grade II: 0.08 ~ 0.15; Grade III: 0.45 ~ 0.80

The emission standard of malodorous pollutants in China (GB 14554-93) is 0.54 ~ 32kg/h.

The former Soviet Union (1975) stipulated that the maximum allowable concentration of harmful substances in water was 0.2 mg/L.

The maximum allowable concentration of harmful substances in sewage of the former Soviet Union (1975) was 0.4 mg/L.

Emergency treatment of leakage

Quickly evacuate people in the leaked and polluted area to the windward, isolate them, and strictly restrict access. Cut off the fire. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and fire protection clothing. Enter the field from the windward. Cut off the leakage source 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. Reasonable ventilation and accelerated diffusion. Spray water is diluted and dissolved. Build a dike or dig a pit to contain a large amount of wastewater. If possible, send residual gas or leaked gas to the water washing tower or fume hood with exhaust fan. Leaked containers should be properly treated, repaired and inspected before use.

protective measure

Respiratory system protection: Wear a filter gas mask (half mask) when the concentration in the air exceeds the standard. In case of emergency rescue or evacuation, it is recommended to wear oxygen respirator or air respirator.

Eye protection: Wear chemical safety glasses.

Physical protection: wear anti-static work clothes.

Hand protection: wear rubber gloves.

Others: Smoking and eating are strictly prohibited in the workplace. After work, take a shower and change clothes.

Emergency treatment

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

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

Inhalation: leave the scene quickly and go to a place with fresh air. Keep the respiratory tract unobstructed. If you have difficulty breathing, give oxygen. If breathing stops, give artificial respiration immediately. See a doctor.

fire fighting

Fire extinguishing method: cut off the gas source. If the gas source cannot be cut off immediately, it is not allowed to extinguish the burning gas. Spray water to cool the container, and if possible, move the container from the fire to an open place. Extinguishing agent: atomized water, insoluble foam, dry powder and carbon dioxide.