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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


- Remove to fresh air.

- If breathing is irregular or stopped, administer artificial respiration.

- If symptoms persist, call a physician.


- After contact with skin, wash immediately with plenty of soap and water.

- Consult a physician.


- In the case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

- Call a physician immediately.


- Call a physician immediately.

- Clean mouth with water.

- Do not induce vomiting without medical advice.

- Never give anything by mouth to an unconscious person.

Most important symptoms and effects, both acute and delayed:

- This substance - coming in the form of steam, fume or powder - causes serious irritation of the mucous membranes and the respiratory organs. Accidental exposure to this substance provokes sneezing, coughing, and a burning sensation to nose and throat, with an increased secretion of the mucous membrane. Repeated or recurrent exposure may cause, in general, inflammation of the respiratory organs, ulceration of the nose tissues, haemorrhage/atrophy of the mucous membranes (reversible), loss of the olfactory faculties, hoarseness, etc..

Fire-fighting measures

Extinguishing media:

Appropriate fire-fighting equipment:

- Foam, carbon dioxide (CO2), powder, water spray.

Inappropriate fire-fighting equipment:

- Do not use water jets as they can disperse and spread fire.

Special hazards arising from the substance or mixture:

- In combustion emits toxic fumes of carbon dioxide / carbon monoxide.

Advice for firefighters:

- In the event of fire, wear self-contained breathing apparatus.

- Water mist may be used to cool closed containers.

- Use personal protective equipment to protect skin/eyes.

Accidental release measures

Personal precautions, protective equipment and emergency procedures:

- Move any people not authorised to contain the emergency out of the area.

- Avoid coming in contact with the substance or handling containers without adequate protection.

- Use the personal protective equipment described in section 'Exposure controls/personal protection'

- Use a respirator in the event of emissions/spillage of large quantities.

- Eliminate all sources of ignition.

- Remove all incompatible materials as outlined in section 'Stability and reactivity'

Environmental precautions:

- Contain the spillage as far as possible.

- Prevent spilled materials getting into the drainage system, wells, surface water or groundwater.

- In the case of leaks into a water course, drains, or if the product has contaminated the ground or vegetation, contact the local authorities.

Methods and material for containment and cleaning up:

- Do not use equipment that can generate sources of ignition when cleaning.

- If possible, vacuum up the spilled material and/or absorb parts that can't be vacuumed up with inert materials (sand, earth, absorbent materials...), mechanically collect any solidified material and place in suitable containers (separate liquids and solids) for disposal in accordance with section 'Disposal considerations'. After collection, ventilate and clean the affected area with water before granting access.

- Do not flush the water used for cleaning into watercourses or down drains.

Handling and storage

Precautions for safe handling:

Recommendations for safe use:

- Provide sufficient air exchange and/or exhaust in work rooms.

- Avoid contact with skin and eyes.

- In the case of solidification of the product: Avoid accumulation of electrostatic charges, to prevent risk of powders exploding.

- Avoid breathing vapours.

Advice on general occupational hygiene:

- Do no eat, drink or smoke when using this product.

- Wash hands thoroughly after handling.

- Take off contaminated clothing and wash it before reuse.

- Contaminated work clothing should not be allowed out of the workplace.

Conditions for safe storage, including any incompatibilities:

- Eliminate all sources of combustion.

- Keep container hermetically closed in a dry and well ventilated environment.

- Keep tank inactivated when product is stored in molten state.

- Keep away from incompatible materials (see point 'Stability and reactivity').

- Keep away from food, feed and beverages.

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:
Shipping information
Proper shipping name and description:
Chemical name:
1,2,3,6-tetrahydrophthalic anhydride (molten)
Special provisions / remarks
Special provisions:
- Tunnel restriction code: D
- Category - limited quantities per transport unit: 3
- LQ code - limited quantities per pack unit: LQ0
- E code excepted quantities: E0

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

UN number:
Shippingopen allclose all
Remarksopen allclose all

Marine transport (UN RTDG/IMDG)

UN number:
Shipping information
Proper shipping name and description:
Chemical name:
1,2,3,6-tetrahydrophthalic anhydride (molten)
Special provisions / remarks
- LQ code - limited quantities per pack unit: 0
- E code excepted quantities: E0

Air transport (UN RTDG/ICAO/IATA)

UN number:
Shipping information
Proper shipping name and description:
Chemical name:
1,2,3,6-tetrahydrophthalic anhydride (molten)
Special provisions / remarks
- Packing Instructions / max. net quantities per package per plane - combi and cargo: PROHIBITED
- Packing Instructions / max. net quantities per package in limited quantity regime: PROHIBITED
- EQ code for excepted quantities regime: E0

Additional transport information

Additional information
Special provisions / remarks / other:
Transport in bulk according to Annex II of MARPOL and the IBC Code: NOT AVAILABLE

Exposure controls / personal protection

Appropriate engineering controls:

- See the eSDS.

Eye / face protection:

- Goggles or protective visor.

Skin protection / of the Hand:

- The material the gloves are made of must be impermeable and stable when in contact with the substance. No specific information available on the suitability of the material and thickness of the gloves. Consult the glove manufacturer for specific information on the suitability of the gloves. Replace the gloves in the case of internal contamination, when punctured, or if external contamination cannot be removed. The actual duration of protection depends on the conditions of use.

Skin protection / of the body:

- Wear protective clothing resistant to chemical substances.

Respiratory protection:

- Mask with P3 dust filter if solid or type A filter for vapours and organic gases with a boiling point > 65°C if molten. (EN 149)

Environmental exposure controls:

- See the eSDS.

Stability and reactivity


- Stable under normal conditions.

Chemical stability:

- Stable under normal conditions.

Possibility of hazardous reactions:

- Produces steam suddenly when water is added.

Conditions to avoid:

- Avoid the build-up of electrostatic charges.

- Avoid exposure to heat sources.

Incompatible materials:

- Oxidizing agents, alkali metals.

Disposal considerations

Recycle if possible, or send to an authorized incinerator. Follow the instructions in sections 'Accidental release measures'  and 'Handling and storage' when handling waste spillages, taking the steps indicated in the same sections. We recommend recycling containers instead of disposal. Observe the local and national legislation in force.