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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Guidance on Safe Use

Guidance on Safe Use

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Administrative data

First-aid measures

General advice:

Remove contaminated clothing.

If inhaled:

If difficulties occur after dust has been inhaled, remove to fresh air and seek medical attention.

On skin contact:

Wash thoroughly with soap and water.

On contact with eyes:

Wash affected eyes for at least 15 minutes under running water with eyelids held open.

On ingestion:

Rinse mouth and then drink plenty of water.

Fire-fighting measures

Suitable extinguishing media:

water, foam, carbon dioxide, dry extinguishing media

Specific hazards:

methylamine, nitrous gases

The substances/groups of substances mentioned can be released in case of fire.

Special protective equipment:

Wear a self-contained breathing apparatus.

Further information:

Dispose of fire debris and contaminated extinguishing water in accordance with official regulations.

Accidental release measures

Personal precautions:

Handle in accordance with good industrial hygiene and safety practice. Wear respiratory protection if

ventilation is inadequate. Avoid dust formation. Do not breathe dust.

Environmental precautions:

Discharge into the environment must be avoided.

Methods for cleaning up or taking up:

For large amounts: Contain with dust binding material and dispose of.

Handling and storage


No special measures necessary provided product is used correctly. Avoid dust formation. When filling,

transferring, or emptying of containers, adequate local exhaust ventilation is necessary. Keep

container tightly sealed. Product should be worked up in closed equipment as far as possible.


Segregate from nitrites.

Further information on storage conditions: Containers should be stored tightly sealed in a dry place.

Protect against moisture.

Storage stability:

Storage duration: 24 Months

Tends to cake.

Transport information

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Marine transport (UN RTDG/IMDG)

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Exposure controls / personal protection

Components with workplace control parameters

598-50-5: methylurea

Personal protective equipment

Respiratory protection:

Breathing protection if breathable aerosols/dust are formed. Particle filter with low efficiency for solid

particles (e.g. EN 143 or 149, Type P1or FFP1) Self-contained breathing apparatus.

Hand protection:

Chemical resistant protective gloves (EN 374)

chloroprene rubber (CR) - 0.5 mm coating thickness

natural rubber/natural latex (NR) - 0.5 mm coating thickness

nitrile rubber (NBR) - 0.4 mm coating thickness

butyl rubber (butyl) - 0.7 mm coating thickness

polyvinylchloride (PVC) - 0.7 mm coating thickness

fluoroelastomer (FKM) - 0.7 mm coating thickness

Manufacturer's directions for use should be observed because of great diversity of types.

Eye protection:

Safety glasses with side-shields (frame goggles) (e.g. EN 166)

General safety and hygiene measures:

Handle in accordance with good industrial hygiene and safety practice. Wearing of closed work

clothing is required additionally to the stated personal protection equipment.

Stability and reactivity

Thermal decomposition: No data available.

Hazardous reactions:

Reacts with alkalis and nitrites.

Hazardous decomposition products:


Disposal considerations

Incinerate in suitable incineration plant, observing local authority regulations.

Contaminated packaging:

Uncleaned empties should be disposed of in the same manner as the contents.