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isocyanatoethyl methacrylate

methacryloyloxyethyl isocyanate

Name of the substance

2-isocyanatoethyl methacrylate


2-methacryloyloxyethyl isocyanate

CAS No 30674-80-7

Molecular weight:155.15  

Feature of KarenzMOI®
○ NCO reactive polymers (oligomers) and monomers with pendant methacryloyl group can be easily synthesized.
○ Reactivity of NCO Group: Similar reactivity as aromatic isocyanate.
○ Copolymerization:UV curing rate of KarenzMOI derivatives containing urethane bond is similar to that of acryl ester.

The reactivity of KarenzMOI®
Click to find the "Copolymerization" and "Reactivity of NCO group" infomation below.


Reactivity of NCO group

Applications of KarenzMOI®
Electronics(Solder Resist, Film Resist, Adhesive). Printing(Printing Plate, Proof). Medical Care(Soft Contact Lenses, Dental Material). Textile Lumber Paper(Surface Treatment). Automobiles(Top Coat, Coating for Repair, Coating for Parts). Household Electric Appliances(Substrate, Insulating Material). Construction materials(Cement Primer, Paint, Adhesive)


Physical Properties
・Boiling Point :211℃
・Specific Gravity :1.096(25℃)
・Freezing Point :-45℃
・Flash Point :97℃(TCC)or99℃(COC)
・Heat Capacity :1.80J/g・K
・Thermal Conductivity :1.59×10W/m・K
・Viscosity :1.44mPa・sec
・Vapor Pressure :27Pa(25℃)
・Heat of Vaporization :55.6KJ/mol
・Tg :60℃(homopolymer)

・Appearance :Clear,colorless or slightly yellowish liquid
・Odor :Pungent odor
・Assay :97%min.

Toxicologlical Information
・Corrosive Action on Skin :Highly corrosive
・Irritant Action on Skin and Eye :Highly irritant. Causes chemical burn. May cause loss of eyesight.
・Sensitivity  :Strong sensitivity was found in guinea pigs.
・Acute Toxicity (oral) :Rat:LD50 670-2,000 mg/kg
(percutaneous):Rabbit:LD50 1,000-2,000 mg/kg
(Inhalation):Rat:LC50 25ppm/1hr. 4ppm/6hrs.
・Subacute Toxicity :Hyperplasia of nasal mucous membrane occurred after inhalation of 25 ppb or more for 91 days.
・Mutagenicity Chromosomal berration Test :CHO cells:negative
Ames test(Induced Mutation Frequency Test)
S 9mix(+) Salmonella : TA98, TA100: Positive
S 9mix(+) Salmonella : TA1535, TA1537: Negative
S 9mix(-) Salmonella : TA98, TA100, TA1535, TA1537: Negative

Ecological Information
・Environmental Toxicity :Minnow:LC50 162 mg/ l /96 hrs.
Water flea:LC50 5mg/ l /48 hrs.

Regulatory Information
Law and regulations applicable in Japan:
・Fire Service Law :Hazardous material, Group 4, Petroleum Category V
・Ship Safety Law :Toxic material, Attached Table 4

When using the product outside Japan, it must be handled in accordance with applied laws and regulations in that country or territory.

Trasport Information
・UN hazard class and No. :Class 6.1 (toxic material)   U.N.No.: 2206
・Containers :For a shipment of 20 kgs: Chemidrum
For a shipment of 200 kgs:Chemdrum
・Labeling :The label should state that special care should be taken to bring fire close to the container, nor to throw out or lay the container.
During loading or unloading, care should be taken to avoid impact on the container and to prevent breakage of container and resultant leakage of the product.
Avoid wetting of the container.
Keep the container apart from fire.
When transporting the product outside Japan, conform to applied laws and regulations in that country or territory.

Receive and read SHOWA DENKO 's Material Safety Date Sheet, and understand its information.

■Handling ■
KarenzMOI is highly hazardous and can corrode eyes, mucous membrane and skin.
Therefore, observe the following precautions:

1) Give regular education to operators regarding the toxicity and reactivity of KarenzMOI .
2) Be careful to avoid direct contact of skin, eyes, or clothing with KarenzMOI . Make sure not to inhale vapor.
3) In case KarenzMOI has splashed on clothing, take the clothing off immediately. As for skin, wash the affected area thoroughly with water. Then wash with soap and water. Contaminated clothing should be disposed of.

・ Avoid contact with water, heat, strong base and active-hydrogen-containing compounds(alcohol, amine).
・ KarenzMOI reacts with moisture and generates insoluble urea and carbon dioxide gas. Urea can cause clogging of pipes and valves.
・ Store in a cool and dark place.
・ Observe the laws and regulations with regard to fire fighting and toxic/hazardous materials.

■Type of Packing ■
Chemical Drum:1kg、20kg

※The information contained herein is based upon data considered true and accurate.However,SHOWA DENKO K.K. accepts no responsibility or risk which may result from the handling and use of products or for infringement of any patent.

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