2,2-difluoro-1,3-benzodioxole

Guidance on Safe Use

First-aid measures

Inhalation : Move exposed person to fresh air. Keep person warm and at rest. If

not breathing, if breathing is irregular or if respiratory arrest occurs,

provide artificial respiration or oxygen by trained personnel. It may

be dangerous to the person providing aid to give mouth-to-mouth

resuscitation. Get medical attention if adverse health effects persist

or are severe. If unconscious, place in recovery position and get

medical attention immediately. Maintain an open airway. Loosen

tight clothing such as a collar, tie, belt or waistband.

Ingestion : Wash out mouth with water. Move exposed person to fresh air.

Keep person warm and at rest. If material has been swallowed and

the exposed person is conscious, give small quantities of water to

drink. Stop if the exposed person feels sick as vomiting may be

dangerous. Do not induce vomiting unless directed to do so by

medical personnel. If vomiting occurs, the head should be kept low

so that vomit does not enter the lungs. Get medical attention if

adverse health effects persist or are severe. Never give anything by

mouth to an unconscious person. If unconscious, place in recovery

position and get medical attention immediately. Maintain an open

airway. Loosen tight clothing such as a collar, tie, belt or waistband.

Skin contact : Flush contaminated skin with plenty of water. Remove contaminated

clothing and shoes. Continue to rinse for at least 10 minutes. Get

medical attention. Wash clothing before reuse. Clean shoes

thoroughly before reuse.

Eye contact : Immediately flush eyes with plenty of water, occasionally lifting the

upper and lower eyelids. Check for and remove any contact lenses.

Continue to rinse for at least 10 minutes. Get medical attention if irritation occurs.

Fire-fighting measures

Extinguishing media

Suitable extinguishing media: Use dry chemical, CO2, water spray (fog) or foam.

Unsuitable extinguishing media: Do not use water jet.

Special hazards arising from the substance or mixture

Hazards from the substance or mixture: Flammable liquid. In a fire or if heated, a pressure increase will

occur and the container may burst, with the risk of a subsequent explosion. Runoff to sewer may create fire or explosion hazard.

Hazardous combustion products: Decomposition products may include the following materials:

carbon oxides

halogenated compounds

Advice for firefighters

Special precautions for firefighters: Promptly isolate the scene by removing all persons from the vicinity

of the incident if there is a fire. No action shall be taken involving any personal risk or without suitable training. Move containers from fire

area if this can be done without risk. Use water spray to keep fire exposed containers cool.

Special protective equipment for fire-fighters: Fire-fighters should wear appropriate protective equipment and selfcontained

breathing apparatus (SCBA) with a full face-piece operated in positive pressure mode.

Accidental release measures

Personal precautions, protective equipment and emergency procedures: No action shall be taken involving any personal risk or without

suitable training. Keep unnecessary and unprotected personnel from entering. Do not touch or walk through spilt material. Shut off all

ignition sources. No flares, smoking or flames in hazard area. Avoid breathing vapour or mist. Provide adequate ventilation. Put on

appropriate personal protective equipment.

Environmental precautions: Avoid dispersal of spilt material and runoff and contact with soil,

waterways, drains and sewers. Inform the relevant authorities if the product has caused environmental pollution (sewers, waterways, soil or air).

Small spill : Stop leak if without risk. Move containers from spill area. Dilute with

water and mop up if water-soluble or absorb with an inert dry material

and place in an appropriate waste disposal container. Use sparkproof

tools and explosion-proof equipment. Dispose of via a licensed waste disposal contractor.

Large spill: Stop leak if without risk. Move containers from spill area. Prevent

entry into sewers, water courses, basements or confined areas.

Contain and collect spillage with non-combustible, absorbent

material e.g. sand, earth, vermiculite or diatomaceous earth and

place in container for disposal according to local regulations. Use spark-proof tools and explosion-proof equipment.

Dispose of via a licensed waste disposal contractor. Contaminated absorbent material may pose the same hazard as the spilt product.

Handling and storage

Manufacture and use of this chemical intermediate takes place under strictly controlled conditions, as described in Art. 17/18 REACH. The substance is rigorously contained during manufacturing and use and appropriate risk management measures including PPE (i.g. during charging or sampling) are applied. Occupational exposure is reduced to a minimum and well controlled by measurements. A management system covering all general aspectsof a chemical production is in place, especially cleaning and maintenance of plants and equipment. An authorisation scheme based on instructions covering the whole process ensures that only trained and authorised staff handles the substance.

Precautions for safe handling: Put on appropriate personal protective equipment.

Eating, drinking and smoking should be prohibited in areas where this

material is handled, stored and processed. Workers should wash

hands and face before eating, drinking and smoking. Do not breathe

vapour or mist. Do not ingest. Avoid contact with eyes, skin and

clothing. Use only with adequate ventilation. Wear appropriate

respirator when ventilation is inadequate. Do not enter storage areas

and confined spaces unless adequately ventilated. Keep in the

original container or an approved alternative made from a compatible

material, kept tightly closed when not in use. Store and use away

from heat, sparks, open flame or any other ignition source. Use

explosion-proof electrical (ventilating, lighting and material handling)

equipment. Use non-sparking tools. Take precautionary measures

against electrostatic discharges. To avoid fire or explosion, dissipate

static electricity during transfer by earthing and bonding containers

and equipment before transferring material. Empty containers retain product residue and can be hazardous.

The product is registered with strictly controlled conditions as defined in Article 17(3) or 18(4) of the regulation (EC) no. 1907/2006 (REACH regulation) and must therefore be handled as such. Refer to industry guidance prepared by Concawe/Cefic/EFCG for advice on the confirmation of strictly controlled conditions.

Conditions for safe storage, including any incompatibilities: Do not store above the following temperature: 50°C (122°F). Store in

accordance with local regulations. Store in a segregated and

approved area. Store in original container protected from direct

sunlight in a dry, cool and well-ventilated area, away from

incompatible materials and food and drink.

Eliminate all ignition sources. Separate from oxidizing materials.

Keep container tightly closed and sealed until ready for use.

Containers that have been opened must be carefully resealed and

kept upright to prevent leakage. Do not store in unlabelled

containers. Use appropriate containment to avoid environmental contamination.

Transport information

Shipping

SpecialProvisions

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

Shipping

Remarks

Shipping

Remarks

SpecialProvisions

Exposure controls / personal protection

Control parameters

Exposure limit values : Not available.

Recommended monitoring procedures: If this product contains ingredients with exposure limits, personal,

workplace atmosphere or biological monitoring may be required to

determine the effectiveness of the ventilation or other control

measures and/or the necessity to use respiratory protective

equipment. Reference should be made to European Standard EN

689 for methods for the assessment of exposure by inhalation to

chemical agents and national guidance documents for methods for the determination of hazardous substances.

Exposure controls

Risk management measures

Occupational exposure controls

Technical measures : Use only with adequate ventilation. Use process enclosures, local

exhaust ventilation or other engineering controls to keep worker

exposure to airborne contaminants below any recommended or

statutory limits. The engineering controls also need to keep gas,

vapour or dust concentrations below any lower explosive limits. Use explosion-proof ventilation equipment.

Personal protection measures

Respiratory protection: Use a properly fitted, air-purifying or air-fed respirator complying with

an approved standard if a risk assessment indicates this is

necessary. Respirator selection must be based on known or

anticipated exposure levels, the hazards of the product and the safe

working limits of the selected respirator.

Recommended: Vapour respirator if product forms vapour/aerosol.

Hand protection : Chemical-resistant, impervious gloves complying with an approved

standard should be worn at all times when handling chemical

products if a risk assessment indicates this is necessary. After

contamination with product change the gloves immediately and

dispose of them according to relevant national and local regulations

Recommended: (< 1 hour) Baypren - , Viton - or PVC gloves.

Eye protection : Safety eyewear complying with an approved standard should be

used when a risk assessment indicates this is necessary to avoid

exposure to liquid splashes, mists, gases or dusts.

Recommended: safety glasses with side-shields

Skin protection : Personal protective equipment for the body should be selected

based on the task being performed and the risks involved and should

be approved by a specialist before handling this product.

Recommended: Wear protective clothing.

Hygiene measures : Wash hands, forearms and face thoroughly after handling chemical

products, before eating, smoking and using the lavatory and at the

end of the working period. Appropriate techniques should be used to

remove potentially contaminated clothing. Wash contaminated

clothing before reusing. Ensure that eyewash stations and safety showers are close to the workstation location.

Environmental exposure controls

Technical measures: Emissions from ventilation or work process equipment should be

checked to ensure they comply with the requirements of

environmental protection legislation. In some cases, fume

scrubbers, filters or engineering modifications to the process

equipment will be necessary to reduce emissions to acceptable levels.

Stability and reactivity

Reactivity : No specific test data related to reactivity available for this product or its ingredients.

Chemical stability : The product is stable.

Possibility of hazardous reactions: Under normal conditions of storage and use, hazardous reactions will not occur.

Conditions to avoid : Avoid all possible sources of ignition (spark or flame). Do not

pressurise, cut, weld, braze, solder, drill, grind or expose containers to heat or sources of ignition.

Incompatible materials : Reactive or incompatible with the following materials: oxidizing materials

Hazardous decomposition products: Under normal conditions of storage and use, hazardous decomposition products should not be produced.

Disposal considerations

Waste treatment methods

Product

Methods of disposal : Examine possibilities for re-utilisation. Product residues and

uncleaned empty containers should be packaged, sealed, labelled,

and disposed of or recycled according to relevant national and local

regulations. Where large quantities are concerned, consult the

supplier. When uncleaned empty containers are passed on, the

recipient must be warned of any possible hazard that may be caused

by residues. For disposal within the EC, the appropriate code

according to the European Waste List (EWL) should be used. It is

among the tasks of the polluter to assign the waste to waste codes

specific to industrial sectors and processes according to the

European Waste List (EWL).

Hazardous waste : The classification of the product may meet the criteria for a hazardous waste.

Packaging

Methods of disposal : The generation of waste should be avoided or minimised wherever

possible. Waste packaging should be recycled. Incineration or

landfill should only be considered when recycling is not feasible.

Special precautions : This material and its container must be disposed of in a safe way.

Care should be taken when handling emptied containers that have

not been cleaned or rinsed out. Empty containers or liners may

retain some product residues. Vapor from product residues may

create a highly flammable or explosive atmosphere inside the

container. Do not cut, weld or grind used containers unless they

have been cleaned thoroughly internally. Avoid dispersal of spilt

material and runoff and contact with soil, waterways, drains and

sewers.