Overview of aziridine:
Aziridine generally refers to aziridine.
The pure product of cyclohexylamine is colorless liquid with the smell of ammonia. Its freezing point is - 74 ℃, B.P. 55-56 ℃, n25d 1.4123, relative density is 0.832 (24 ℃), f.p.12 ℃, it can be mixed with water and dissolved in ethanol. The aqueous solution is alkaline. It is easy to polymerize when meeting acid or absorbing carbon dioxide. The commercial cyclohexylamine contains a small amount of sodium hydroxide as stabilizer.
On October 27, 2017, the list of carcinogens published by the International Cancer Research Institute of the World Health Organization was preliminarily sorted out for reference, and aziridine was included in the list of class 2B carcinogens.
Chinese Name: Vinyl imine
English Name: aziridine; ethylenemine; ethylenimine; dimethleneimine; 1H azirine, dihydro -; aethlenimin; aminoethlene; azacycloopropane
Alternative name: ethyleneimine; aziridine; aziridine; diethyleneimine; 1-azacyclopropane; acridine; nitrogen tricycle; cyclohexylamine
Chemical formula: c2h5n; ch2nhch2
Molecular weight: 43.07
CAS Registration No.: 151-56-4
EINECS login No.: 205-793-9
Melting point: - 78 ℃
Boiling point: 56 ℃
Water solubility: miscible
Density: relative density (water = 1) 0.83
Flash point: - 11 ℃
Use of aziridine:
It is used to manufacture active dyes, anticancer agents and other drugs, change the properties of synthetic fibers, and process paper, etc. The intermediate of thiotepa is organic synthetic material, such as triethylamine.
Emergency treatment and disposal of aziridine:
1、 Leakage emergency treatment
Evacuate the personnel in the leakage pollution area to the safety area, prohibit irrelevant personnel from entering the pollution area and cut off the fire source. Emergency treatment personnel shall wear positive pressure self-contained breathing apparatus and chemical protective clothing. Do not contact the leakage directly, wash with plenty of water, and put the diluted washing solution into the waste water system. If there is a large amount of leakage, it shall be collected, transferred, recycled or discarded after harmless treatment.
2、 Protective measures
Respiratory system protection: gas masks should be worn when it is possible to contact with steam. In case of emergency rescue or evacuation, it is recommended to wear self-contained breathing apparatus.
Eye protection: wear chemical safety goggles.
Protective clothing: wear anti-corrosion work clothes.
Hand protection: wear chemical resistant gloves.
Others: smoking, eating and drinking are prohibited at the work site. After work, take a shower and change clothes. Regular physical examination.
3、 First aid measures
Skin contact: take off contaminated clothes and wash thoroughly with large amount of flowing water for at least 15 minutes. Seek medical advice.
Eye contact: immediately open the upper and lower eyelids, wash with flowing water or normal saline for at least 15 minutes. Seek medical advice.
Inhalation: quickly leave the site to fresh air. Keep respiratory tract unobstructed. Give oxygen when breathing is difficult. When breathing stops, artificial respiration shall be carried out immediately. Seek medical advice.
Ingestion: gargle the mouth if you take it by mistake, and drink milk or egg white. Seek medical advice.
Fire extinguishing methods: foam, carbon dioxide, dry powder and sand.
Precautions for aziridine:
Packaging, storage and transportation: a small amount of caustic soda is added during storage to prevent polymerization caused by carbon dioxide.
PZU-1000 aziridine-terminated aliphatic isocyanate Menadiona Mina original imported genuine factory price direct sales
PZU-1000 as a cross-linking agent can be widely used in water-based and oil-based textile printing and leather finishing industries, and can improve the physical and chemical properties of products.
PZP-7500 polyfunctional aziridine crosslinking agent Menadiona Mina original imported genuine factory price direct sales
PZP-1000 aziridine crosslinking agent Menadiona Mina original imported genuine factory price direct sales
PZE-1000 aziridine crosslinking agent PZE-1000
PZBI-25 fixing agent Menadiona Mina original imported genuine factory direct sales
CL-422 Food Grade Ink Crosslinking Agent Trimethylolpropane-tris (3-aziridinyl propionate) Menadiona Mai Na Original imported genuine Factory price direct sales
Brand exclusive agent / first-level agent, imported genuine and good raw materials, sufficient effective ingredients
Including DuPont, Evonik, Kemu, Axalta and many other international chemical brand products
The general agent / exclusive agent of many famous chemical brands in mainland China, saving money and worrying
Chemical warehouses, all over the country, distribution nearby, professional logistics, same day delivery