Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

First-aid measures

General information
Remove contaminated clothes immediately and soak in Ammonia water.
Clean body thoroughly (shower or bathe)
Seek medical advice immediately
After inhalation
Remove the casualty into fresh air and keep him calm.
Summon a doctor immediately.
After contact with skin
In case of contact with skin wash off immediately with soap and water
Remove contaminated clothes, under clothes and shoes immediately.
Keep wounds covered free of germs.
Keep body calm, protect against loss of heat.
Take for medical treatment
After contact with eyes
In case of contact with eyes rinse thoroughly with plenty of water and seek medical advice
After ingestion
Let plenty of water be drunk in small gulps.
Provide for body rest, protect against loss of heat.
seek medical attention.
Advice to doctor
Symptoms appear mostly after several hours.
If there is a breathing problem give oxygen

Fire-fighting measures

Suitable extinguishing media
dry powder
carbon dioxide
water spray jet
Special hazards from the substance itself, its combustion products or from its vapours
In case of fires, hazardous combustion gases are formed: Carbon monoxide (CO)
Sulphur dioxide (SO2)
Special protective equipment for firefighting
Use self-contained breathing apparatus

Accidental release measures

Personal precautions
Avoid contact with skin and eyes.
Wear personal protective equipment. Unprotected persons must be kept away.
Environmental precautions
Do not discharge into the drains/surface waters/groundwater.
Methods for cleaning up/taking up
Do not spread product with water.
Transpose with caustic soda or ammonia.
Reclean wetted surface thoroughly with ammonia water.
Cleaning operations should be carried out only with breathing apparatus.
When picked up, treat material as prescribed under heading "Disposal".
Containers in which spilt substance has been collected must be adequately labelled

Handling and storage

Advice on safe handling
Do not transport or store with easily combustible substances.
Advice on protection against fire and explosion
Keep away from sources of ignition
The product is combustible.
Requirements for storage rooms and vessels
Keep only in the original container
Advice on storage compatibility
Do not store or transport together with foodstuffs
Further information on storage conditions
Keep container tightly closed and dry in a cool, well-ventilated place
Keep locked up

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:
UN 1595
Shipping information
Proper shipping name and description:
Chemical name:
dimethyl sulphate
SpecialProvisionsopen allclose all

Inland waterway transport (UN RTDG/ADN(R))

UN number:
UN 1595
Shipping information
Proper shipping name and description:
Dimethyl sulphate
Remarksopen allclose all

Marine transport (UN RTDG/IMDG)

UN number:
UN 1595
Shipping information
Proper shipping name and description:
Dimethyl sulphate
Remarksopen allclose all

Air transport (UN RTDG/ICAO/IATA)

Shippingopen allclose all
Special provisions / remarks
shipment not permitted
SpecialProvisionsopen allclose all

Exposure controls / personal protection

General protective measures
On no account inhale vapours
Contact with eyes and skin must be avoided
Avoid exposure - obtain special instructions before use
Hygiene measures
Keep away from foodstuffs and beverages.
Clean skin thoroughly immediately after working with the product.
Respiratory protection : Short term: filter apparatus, Filter A
Self-contained breathing apparatus
Hand protection : For short-term exposure (splash protection):
Neoprene gloves
Minimum breakthrough time / gloves : 120 min
Polychloroprene gloves
Minimum breakthrough time / gloves : 480 min
Minimum thickness / gloves 0,5 mm
Butyl rubber gloves.
Minimum breakthrough time / gloves : 480 min
Minimum thickness / gloves 0,5 mm
These types of protective gloves are offered by various
manufacturers. Please note the manufacturers´ detailed
statements, especially about the minimum thickness and the
minimum breakthrough time. Consider also the particular
working conditions under which the gloves are being used.
Eye protection : safety glasses/face shield
Body protection : protective clothing

Stability and reactivity

Thermal decomposition : > 200 °C
Hazardous reactions
Reactions with alkalies.
At higher temperatures, reaction with water takes place.
Hazardous decomposition products
Sulphur dioxide

Disposal considerations

Carefully add the product with constant stirring to a cold ammonia solution of maximum
10% concentration.
Uncleaned packaging
Packaging that cannot be cleaned should be disposed of as product waste