Butyl chloroformate

Guidance on Safe Use

First-aid measures

4.1. Description of first aid measures

Immediately remove contaminated clothing. If the patient is likely to become unconscious, place and transport in stable sideways position (recovery position). First aid personnel should pay attention to their own safety.

If inhaled:

Keep patient calm, remove to fresh air, seek medical attention. Immediately administer a corticosteroid from a controlled/metered dose inhaler.

On skin contact:

Immediately wash thoroughly with plenty of water, apply sterile dressings, consult a skin specialist.

On contact with eyes:

Immediately wash affected eyes for at least 15 minutes under running water with eyelids held open, consult an eye specialist.

On ingestion:

Immediately rinse mouth and then drink 200-300 ml of water, seek medical attention.

4.2. Most important symptoms and effects, both acute and delayed

Symptoms: The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11.

4.3. Indication of any immediate medical attention and special treatment needed

Treatment: Treat according to symptoms (decontamination, vital functions), no known specific antidote. Pulmonary odema prophylaxis. Medical monitoring for at least 24 hours.

Fire-fighting measures

5.1. Extinguishing media

Suitable extinguishing media:

dry powder, carbon dioxide, alcohol-resistant foam

Unsuitable extinguishing media for safety reasons:

water

Additional information:

The product is sparingly soluble in water and is only covered.

5.2. Special hazards arising from the substance or mixture

hydrogen chloride, phosgene; carbonyl chloride, carbon oxides, halogenated compounds

The substances/groups of substances mentioned can be released in case of fire.

5.3. Advice for fire-fighters

Special protective equipment:

Wear self-contained breathing apparatus and chemical-protective clothing.

Further information:

Suppress gases/vapours/mists with water spray jet. Fire debris must be disposed of in accordance with offical regulations.

Accidental release measures

6.1. Personal precautions, protective equipment and emergency procedures

Wear a self-contained breathing apparatus. Avoid contact with the skin, eyes and clothing. Keep people away and stay on the upwind side.

6.2. Environmental precautions

Discharge into the environment must be avoided.

6.3. Methods and material for containment and cleaning up

For large amounts: Pump off product. Dispose of absorbed material in accordance with regulations.

For residues: Pick up with suitable absorbent material. Dispose of absorbed material in accordance with regulations.

Handling and storage

7.1. Precautions for safe handling

Ensure thorough ventilation of stores and work areas. Protect against moisture. Use only in enclosed systems. Adequate extraction of the vapours is necessary when working with open containers. In case of insufficient ventilation, wear suitable respiratory equipment.

Protection against fire and explosion:

Prevent electrostatic charge - sources of ignition should be kept well clear - fire extinguishers should be kept handy.

7.2. Conditions for safe storage, including any incompatibilities

Segregate from alkalies and alkalizing substances.

Further information on storage conditions: Protect from direct sunlight. Keep only in the original container. Frequently check condition of drums (increase in pressure, bulging, rust). Keep container tightly closed in a cool, well-ventilated place. Product has to be immediately consumed or disposed of, if signs of pressure increase or bulging are being detected at a drum. Protect against moisture. Protect against heat. Storage at a proportionate temperature is required, to avoid 'breathing' of containers.

Storage stability:

Storage temperature: < 20 °C

Storage duration: 6 Months

If the stated storage temperature is exceeded the shelf life can be reduced.

From the data on storage duration in this safety data sheet no agreed statement regarding the warrantee of application properties can be deduced.

Improper storage may result in pressure build up in the drums.

Keep only in the original container in a cool, dry, well-ventilated place away from ignition sources, heat or flame.

Storage stability is based upon ambient temperatures and conditions described.

Transport information

Shipping

SpecialProvisions

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

Shipping

Remarks

Shipping

Remarks

SpecialProvisions

Exposure controls / personal protection

8.1. Control parameters

Components with occupational exposure limits

75-44-5: phosgene; carbonyl chloride

TWA value 0.08 mg/m3 ; 0.02 ppm (OEL (EU))

STEL value 0.4 mg/m3 ; 0.1 ppm (OEL (EU))

592-34-7: butyl chloroformate; chloroformic acid butyl ester

8.2. Exposure controls

Personal protective equipment

Respiratory protection:

Breathing protection if gases/vapours are formed. Gas filter for gases/vapours of organic compounds (boiling point >65 °C, e. g. EN 14387 Type A) Suitable respiratory protection for higher concentrations or long-term effect: Self-contained breathing apparatus.

Hand protection:

Chemical resistant protective gloves (EN 374)

Suitable materials for short-term contact (recommended: At least protective index 2, corresponding > 30 minutes of permeation time according to EN 374)

fluoroelastomer (FKM) - 0.7 mm coating thickness

butyl rubber (butyl) - 0.7 mm coating thickness

nitrile rubber (NBR) - 0.4 mm coating thickness

Supplementary note: The specifications are based on tests, literature data and information of glove manufacturers or are derived from similar substances by analogy. Due to many conditions (e.g. temperature) it must be considered, that the practical usage of a chemical-protective glove in practice may be much shorter than the permeation time determined through testing.

Manufacturer's directions for use should be observed because of great diversity of types.

Eye protection:

Tightly fitting safety goggles (cage goggles) (e.g. EN 166) and face shield.

Body protection:

Body protection must be chosen depending on activity and possible exposure, e.g. apron, protecting boots, chemical-protection suit (according to EN 14605 in case of splashes or EN ISO 13982 in case of dust).

General safety and hygiene measures

Do not breathe vapour/spray. Avoid contact with the skin, eyes and clothing. The substance was registered as a transported isolated intermediate. The manufacturer/importer has received the confirmation by the user that the substance is used under strictly controlled conditions in accordance with art. 18 of the REACH regulation (EC) No 1907/2006. When processing large amounts. When using, do not eat, drink or smoke. Hands and/or face should be washed before breaks and at the end of the shift. Gloves must be inspected regularly and prior to each use. Replace if necessary (e.g. pinhole leaks). Take off immediately all contaminated clothing. Wash contaminated clothing before reuse. Store work clothing separately.

Stability and reactivity

10.1. Reactivity

Corrosion to metals:

Corrodes metals in the presence of water.

Reactions with water/air:

Reaction with:

air

Flammable gases:

no

Reaction with:

water

Flammable gases:

no

Toxic gases:

yes

Which toxic gases:

hydrogen chloride (HCl)

Corrosive gases:

yes

Which corrosive gases:

hydrogen chloride (HCl)

Smoke or fog:

yes

Type of smoke or fog:

Hydrochloric acid

Which Peroxides:

10.2. Chemical stability

Even when products are stored appropriately a slowly decomposition reaction takes place. If the storage conditions and duration are taken into account, no hazard is caused by the product.

10.3. Possibility of hazardous reactions

At elevated temperatures gas forming exothermic decomposition reaction may occur. The formation of gaseous decomposition products builds up pressure in tightly closed containers if the product is greatly overheated. Evolution of corrosive gases/vapours. Reacts with water and basic components to generate heat. Reacts with activated carbon. Reacts with alkalies and metals. Reacts with alcohols, amines, aqueous acids and alkalies. Reacts with water and moisture, with formation of hydrogen chloride. Partly very violent reactions with bases and numerous organic classes of substances such as alcohols and amines. Impurities promote decomposition. Energy is released when reacting with e.g. acids, alkaline reacting substances, amines or catalysts. ppm traces of heavy metals reduce the onset temperature and lead to instability and exothermic product release with gas formation. Vapours may form ignitable mixture with air.

10.4. Conditions to avoid

Temperature: > 40 °C

Avoid all sources of ignition: heat, sparks, open flame. Avoid direct sunlight. Avoid electro-static charge. Avoid humidity. Avoid heat. Disregard of the conditions mentioned may result in undesirable decomposition reactions. Avoid excessive temperatures. Avoid contamination.

10.5. Incompatible materials

Substances to avoid:

alkaline reactive substances, alcohols, bases, amines, iron compounds, heavy metal salts, water

10.6. Hazardous decomposition products

Hazardous decomposition products:

hydrogen chloride, Carbon dioxide, 1-chlorobutane; butyl chloride

Disposal considerations

13.1. Waste treatment methods

Incinerate in suitable incineration plant, observing local authority regulations.

Hydrolysis with alkali / ammonia solution in water.

Esterification with methanol and afterwards incineriation in a suitable incineration facility.

A waste code in accordance with the European waste catalog (EWC) cannot be specified, due to dependence on the usage.

The waste code in accordance with the European waste catalog (EWC) must be specified in cooperation with disposal agency/manufacturer/authorities.

Contaminated packaging:

Be careful when handling empty packing which is not decontaminated and rinsed.

Decontamination of product residues with sodium hydroxide solution / ammonia solution in water.

Thermal recycling of the cleaned drums.