Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 207-069-8 | CAS number: 431-03-8
Guidance on Safe Use
Administrative data
First-aid measures
Description of first aid measures
Inhalation Fresh air, rest, half upright position. Get medical advice / attention if you feel unwell.
Skin contact Remove contaminated clothes, rinse skin with water or shower. If skin
irritation occurs: get medical advice / attention.
Eye contact First rinse with plenty of water (remove lenses if possible). If eye
irritation persists: get medical advice / attention.
Ingestion Rinse mouth. Get medical advice / attention if you feel unwell.
Most important symptoms and effects, both acute and delayed
Acute symptoms and effects from exposure
Redness and pain in the eyes. Redness of the skin.
Delayed symptoms and effects from exposure
Causes damage to lungs [obliterative bronchiolitis (OB)] through
prolonged or repeated exposure by inhalation. Symptoms of lung
disease may include (but is not limited to) persistent dry cough,
wheezing, shortness of breath upon exertion and fixed airways
obstruction on spirometry.
Indication of any immediate medical attention and special treatment needed
Information on medical attendance
Not known.
Special means to provide treatment at the workplace
Not known.
Fire-fighting measures
Extinguishing media
Suitable extinguishing media
Powder, water spray, alcohol-resistant foam, carbon dioxide.
Unsuitable extinguishing media
Water jet, alcohol unstable foam.
Special hazards arising from the substance or mixture
Hazardous combustion products
May produce toxic fumes of carbon monoxide if burning.
Additional hazards
Brief exposure through inhalation to high concentrations may cause lung disease.
The vapour is heavier than air, spreads along the ground and distant ignition is possible.
Run off to sewer may cause fire or explosion hazard. Containers may explode in heat of
fire.
Advice for fire-fighters
Protective actions
In case of fire: keep containers cool by spraying with water.
Retain contaminated extinguishing water; do not allow entering into the sewage system.
In the case of larger fires: Cordon affected area.
Special protective equipment
Self-contained respiratory protective device, full protective suit.
Accidental release measures
Personal precautions, protective equipment and emergency procedures
Information for non-emergency personnel
Vapour may form an explosive mixture with air. Therefore, eliminate all sources of ignition.
Use personal protective equipment to avoid any contamination of skin and eyes. Do not breathe vapours.
Indoor spills: Assure sufficient ventilation.
Outdoor spills: Stay up wind and keep out of low areas where vapour may accumulate and ignite.
Stop leak if this can be achieved without risk.
In the case of large quantities: Consider need for evacuation.
Information for emergency responders
For advice on personal protection clothing, see chapter 8.
Environmental precautions
Try to prevent the material from entering drains, water courses or soil.
Methods and material for containment and cleaning up
Small spills: Allow to evaporate if it is safe to do so or contain and absorb using earth,
sand or other inert material then transfer into suitable containers for recovery or disposal.
Large spills: Ventilate contaminated area thoroughly. Cover drains. Dike or dam in and
vacuum up carefully. Wash away remainder with water.
Handling and storage
This substance is handled under Strictly Controlled Conditions in accordance with REACH regulation Article 17(3) for on-site isolated intermediates and, in case the substance is transported to other sites for further processing, the substance should be handled at these sites under the Strictly Controlled Conditions as specified in REACH regulation Article 18(4). Site documentation to support safe handling arrangements including the selection of engineering, administrative and personal protective equipment controls in accordance with risk-based management systems is available at each manufacturing site.
Written confirmation of application of Strictly Controlled Conditions has been received from every affected Distributor and Downstream Processor/User of the Registrant’s intermediate.
Recommendations for safe handling
Use only in well ventilated areas and in a closed system.
Keep away from heat, sparks, open flames, hot surfaces and do not smoke.
Do not breathe vapours. Avoid contact with eyes, skin and clothing.
Take measures to prevent electrostatic charges, e.g. grounding when transferring/ filing.
Containers have to be properly labelled.
Advice on general occupational hygiene
Do not eat, drink and smoke in work areas.
Use fatty skin care products after repeated contact and washing hands.
Precautions for safe storage and protection against incompatible substances
Store in a well-ventilated place. Keep containers tightly closed.
Keep away from oxidants reducing agents, strong bases and strong acids.
Store away from sources of heat or ignition. Storage tanks should have equipotential electrical bonding and be earthed.
Beware of formation of explosive vapour-air mixtures in empty, uncleaned containers.
Protection against ambient influences
Protect against heat and solar radiation. Recommended storage temperature: 2-8 ºC.
The substance affects many synthetic materials; store only in original packing.
Suited materials for containers are: diacetyl resistant plastics, mild steel, stainless steel.
Maintenance of the integrity of the substance
Not required.
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- 2346
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Inland waterway transport (UN RTDG/ADN(R))
- UN number:
- 2346
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Marine transport (UN RTDG/IMDG)
- UN number:
- 2346
Shipping information
- Proper shipping name and description:
- BUTANEDIONE
- Chemical name:
- 2,3-Butanedione
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Air transport (UN RTDG/ICAO/IATA)
- UN number:
- 2346
Shipping information
- Proper shipping name and description:
- BUTANEDIONE
- Chemical name:
- 2,3-Butanedione
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Exposure controls / personal protection
This substance is handled under Strictly Controlled Conditions in accordance with REACH regulation Article 17(3) for on-site isolated intermediates and, in case the substance is transported to other sites for further processing, the substance should be handled at these sites under the Strictly Controlled Conditions as specified in REACH regulation Article 18(4). Site documentation to support safe handling arrangements including the selection of engineering, administrative and personal protective equipment controls in accordance with risk-based management systems is available at each manufacturing site.
Written confirmation of application of Strictly Controlled Conditions has been received from every affected Distributor and Downstream Processor/User of the Registrant’s intermediate.
The substance/product is registered with strictly controlled conditions as defined in Article 18(4) of Regulation (EC) No. 1907/2006 (REACH Regulation) and must therefore be handled as such.
Appropriate engineering controls
Ventilation and local exhaust.
Individual protection measures, such as personal protective
a) Eye/face protection
Safety goggles (EN 166).
b) Skin protection
Hand protection
Gloves butyl rubber 0.7 mm Breakthrough time > 8 hours (EN 374)
Gloves neoprene 0.75 mm Breakthrough time > 4 hours (EN 374)
Gloves Viton 0.7 mm Breakthrough time > 8 hours (EN 374)
Other Protective clothing (EN 340/EN 14605).
c) Respiratory protection
Filter respirator with filtertype A for organic vapours (EN 14387).
d) Thermal hazards
Not applicable.
Environmental exposure controls
Direct polluted air of the local exhaust ventilation out of the plant in a manner in accordance with environmental regulations.
Stability and reactivity
Reactivity
Exothermic, partially violent reactions with oxidising agents, reducing agents, strong acids and bases possible.
Chemical stability
Stable at usual storage conditions. Decomposes slowly on exposure to light. No stabilizers required.
Possibility of hazardous reactions
Excessive heat generation or splashes of hazardous substances with oxidising agents, reducing agents, strong bases and acids. Contact with strong oxidizers may cause fire and explosions. In case of strong heat: polymerization.
Conditions to avoid
Storage temperatures > 40 °C should be avoided (increase in pressure, deformation of the containers) and direct sunlight. Avoid static discharge and sources of ignition (open flames, warm surfaces, sparks).
Incompatible materials
Strong oxidising agents and reducing agents, strong acids and bases. The substance affects some plastics.
Hazardous decomposition products
Does not decompose when used for intended uses.
Disposal considerations
Product disposal Recycling by distillation.
Removal to an authorized waste incinerator for solvents or as chemical waste in accordance with local regulations. Do not discharge wastewater into sewer.
Packaging disposal
Uncleaned empty package have to be treated like the content. The labelling of uncleaned containers must not be removed.
Waste treatment-relevant information
European waste list (EURAL) 07 01 04
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
