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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 is a new product developed in response to market demand. It is an aziridine-terminated aliphatic isocyanate, a medium temperature crosslinking agent with outstanding yellowing resistance and flexibility.
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-7500 is a compound patented product, which is processed from traditional trifunctional aziridine by a new process.

PZP-1000 aziridine crosslinking agent Menadiona Mina original imported genuine factory price direct sales

PZP-1000 aziridine crosslinking agent is a trifunctional propyleneimine aziridine. It is used as a crosslinking agent in water-based and oil-based paints, inks and adhesives industries to improve the physical and chemical properties of products. The terminal functional groups of aziridine can crosslink with active hydrogen, such as carboxyl groups in acrylic emulsions, carboxyl groups in polyurethane emulsions, etc.

PZE-1000 aziridine crosslinking agent PZE-1000

The amount of PZE-1000 added to the formulations of paints, inks and adhesives is 1% -3%. Under continuous stirring, slowly add PZE-1000. After mixing, the storage period in an aqueous solution with a pH value of 9.0-9.5 will generally reach 18-36 hours. If the pH value is lower, the storage period will be shorter. .

PZBI-25 fixing agent Menadiona Mina original imported genuine factory direct sales

PZBI-25 is a fixing agent and cross-linking agent that can improve cohesion and binding force, which will make the coating have better physical and chemical properties, especially better scratch resistance, water resistance, chemical resistance . This is a blocked isocyanate. The aziridine at both ends will react with active hydrogen, such as carboxyl groups in acrylic emulsions and polyurethane dispersions. It is worth mentioning that no CO2 was released during the reaction and no formaldehyde was released.

CL-422 Food Grade Ink Crosslinking Agent Trimethylolpropane-tris (3-aziridinyl propionate) Menadiona Mai Na Original imported genuine Factory price direct sales

CL-422 Trimethylolpropane-tris (3-aziridinyl propionate) is a multifunctional aziridine, safe, environmentally friendly, globally exclusive SGS certification, can be used for food grade inks.

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