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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
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EC number: 203-514-5 | CAS number: 107-71-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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Guidance on Safe Use
Administrative data
First-aid measures
Description of first aid measures
General advice: Take off contaminated clothing immediately. Never give anything by mouth to an unconscious person. Remove from exposure, lie down. If feeling unwell seek medical advice.
Inhalation: If inhaled remove to fresh air. If cough or other symptoms develops or persists get medical attention.
Skin contact: Wash off with soap and water. Consult a physician in case of eye irritation.
Eye contact: Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Ingestion: If swallowed, call a poison control centre or doctor immediately. DO NOT induce vomiting. Never give anything by mouth to an unconscious person.
Most important symptoms and effects, both acute and delayed Symptoms: None known
Indication of any immediate medical attention and special treatment needed: None known.
Fire-fighting measures
Extinguishing media: Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Unsuitable extinguishing media: High volume water jet.
Special hazards arising from the substance or mixture: The product burns violently. Contact with incompatible materials or exposure to temperatures exceeding the SADT may result in a self acceleration decomposition reaction with release of flammable vapors which may autoignite. Cool closed containers exposed to fire with water spray. Containers exposed to temperatures exceeding the SADT (see section 10) may explode. Exposure to combustion products may be a hazard to health. Do not allow run-off from fire fighting to enter drains or water courses.
Advice for firefighters: Evacuate area and fight fire from a safe distance. Containers near the source of fire should be cooled with a water spray to prevent contents from reaching decomposition temperature. Fire residues and contaminated fire extinguishing water must be disposed of in accordance with local regulations. As in any fire, wear self-contained positive-pressure breathing apparatus, and full protective gear.
Accidental release measures
Personal precautions, protective equipment and emergency procedures: Evacuate personnel to safe areas. Wear a self-contained breathing apparatus and appropriate personal protective equipment. (See Section 8 - Exposure Controls/Personal Protection.) Remove all sources of ignition.
Environmental precautions: Obey relevant local, state, provincial and federal laws and regulations. Do not contaminate any lakes, streams, rivers, groundwater or soil.
Methods and material for containment and cleaning up: Organic Peroxide spills should be attended to immediately. Contain spill and absorb with an inert absorbent material and then wet down the mixture with water. Sweep up mixture of spilled organic peroxide and inert absorbent material using non-sparking tools and place in polyethylene bags for disposal. The sweepings in the polyethylene bag should be further wetted with water and disposed of immediately by an approved disposal company. If stored for any period of time, store out of direct sunlight in a cool, well-ventilated place. After all the material has been picked up, wash down the spill area with surfactant and water to remove any traces of organic peroxide. Allow for sufficient ventilation to aid in the removal of fumes that may be present.
Additional advice: Never return spills in original containers for re-use.
Handling and storage
Precautions for safe handling: Keep away from heat. Keep away from sparks, flames and other sources of ignition. Avoid contact with eyes, skin and clothing. Avoid breathing vapor or mist. Use with adequate ventilation. Follow all MSDS/label precautions even after the container is emptied because it may retain product residues. Wash thoroughly after handling. Do not swallow product. Use personal protective equipment. Protect from contamination. Dispense and transfer in an area separate from storage area. Never return unused material to storage receptacle. Wash contact areas after handling. Remove contaminated clothing and wash before reuse. The addition of accelerators may result in vigorous decomposition.
Conditions for safe storage, including any incompatibilities:
Advice on protection against fire and explosion: Containers exposed to temperatures exceeding the SADT (see section 10) may decompose violently. Consult with specialists to ensure design protects against these hazards.
Storage: Heat or contamination may cause hazardous decomposition. Keep containers dry and tightly closed to avoid moisture absorption and contamination. Keep container away from flammable and explosive substances. Protect from heat and exposure to direct sunlight Store in original container. Transport and store container in upright position only.
Further information: Store between +10°C and +30°C. Do not return residues to original container.
Advice on common storage: Store in accordance with the particular national regulations.
Storage stability: > +10 °C to < +30 °C Avoid temperatures below recommended storage temperatures. Store above -10°C to avoid phase separation which could result in safety hazards or performance complications. Avoid confinement.
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- UN 3103
Shipping information
- Proper shipping name and description:
- Organic peroxide type C, liquid(tert-Butyl peroxyacetate, 50%)
- Chemical name:
- tert-Butyl peroxyacetate
- Language:
- English
- Class or division:
- Class 5: Oxidizing substances and organic peroxides; Division 5.2
- Packing group:
- Packing group II: Substances presenting medium danger
Special provisions / remarks
- Special provisions:
- Special precautions for user: Yes
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Marine transport (UN RTDG/IMDG)
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Air transport (UN RTDG/ICAO/IATA)
- UN number:
- UN 3103
Shipping information
- Proper shipping name and description:
- Organic peroxide type C, liquid(tert-Butyl peroxyacetate, 50%)
- Chemical name:
- tert-Butyl peroxyacetate
- Class or division:
- Class 5: Oxidizing substances and organic peroxides; Division 5.2
- Packing group:
- Packing group II: Substances presenting medium danger
- Labels:
- IATA-C: ERG-Code 5L: Must be protected from direct sunlight and stored away from all sources of heat in a well-ventilated area
IATA-P: ERG-Code 5L: Must be protected from direct sunlight and stored away from all sources of heat in a well-ventilated area.
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Exposure controls / personal protection
Exposure controls:
Engineering measures: Use process enclosures, local exhaust ventilation or other engineering controls to control airborne exposure.
Personal protective equipment:
Respiratory protection: Use respiratory protection unless adequate local exhaust ventilation is provided or exposure assessment demonstrates that exposures are within recommended exposure guidelines.
Hand protection: Personal protective equipment that provides a barrier to prevent dermal exposure to this substance is required. Use impermeable gloves. Gloves must be inspected prior to use. The above mentioned hand protection is based on knowledge of the chemistry and anticipated uses of this product but it may not be appropriate for all workplaces. A hazard assessment should be conducted prior to use to ensure suitability of gloves for specific work environments and processes prior to use. Suitability for specific workplaces should be clarified with protective glove manufacturers. Glove material: butyl rubber, Material thickness 0.5 mm, Break through time > 8 hrs
Eye protection: Use chemical splash goggles or face shield.
Skin and body protection: Select appropriate protective clothing based on chemical resistance data and an assessment of the local exposure potential. Wear the following personal protective equipment: Flame retardant antistatic protective clothing. Skin contact must be avoided by using impervious protecting clothing (gloves, aprons, boots, etc.)
Hygiene measures: Remove and wash contaminated clothing before re-use. Wash contact areas after handling. Keep away from food, drink and animal feedingstuffs. All protective equipment that has been contaminated should be cleaned before reuse.
Stability and reactivity
Reactivity: Stable under recommended storage conditions.
Chemical stability: Contact with incompatible substances can cause disintegration at or below SADT.
Possibility of hazardous reactions: Stability: Product will not undergo hazardous polymerization. Possibility of hazardous reactions: When coming in contact with the product, impurities, decomposition catalysts, metallic salts, alkalis, reducing agents may lead to self-accelerated, exothermic decomposition and the formation of oxygen compounds. Risk of decomposition when exposed to heat.
Conditions to avoid: Keep away from heat and sources of ignition.
Incompatible materials: Heavy metal compounds, reducing agents, Combustible material, Strong acids and strong bases, Oxidizing agents, impurities, metal ions, metallic salts, metals.
Hazardous decomposition products: Temperatures at or above the SADT can result in the release of hazardous decomposition products which are flammable and can autoignite., In case of fire and decomposition formation of inflammable and explosive, irritant, corrosive, harmful and toxic gases and vapors possible. Contact with incompatible materials or exposure to temperatures exceeding the SADT may result in a self acceleration decomposition reaction with release of flammable vapors which may autoignite.
Disposal considerations
Waste treatment methods: Product:
Disposal in accordance with local regulations. According to the European Waste Catalogue, Waste Codes.
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.
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