2-butynoic acid

Guidance on Safe Use

First-aid measures

1. Description of first aid measures

General notes

Do not leave affected person unattended. Remove victim out of the danger area. Keep affected person warm, still and covered.

Take off immediately all contaminated clothing. In all cases of doubt, or when symptoms persist, seek medical advice. In case

of unconsciousness place person in the recovery position. Never give anything by mouth.

Following inhalation

If breathing is irregular or stopped, immediately seek medical assistance and start first aid actions. In case of respiratory tract irritation,

consult a physician. Provide fresh air.

Following skin contact

Rinse skin with water/shower.

Following eye contact

Remove contact lenses, if present and easy to do. Continue rinsing. Irrigate copiously with clean, fresh water for at least 10

minutes, holding the eyelids apart.

Following ingestion

Rinse mouth with water (only if the person is conscious). Do NOT induce vomiting.

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

Symptoms and effects are not known to date.

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

none

Fire-fighting measures

1. Extinguishing media

Suitable extinguishing media

Water spray, ABC-powder, Foam

Unsuitable extinguishing media

Water jet

2. Special hazards arising from the substance or mixture

Deposited combustible dust has considerable explosion potential.

Hazardous combustion products

Carbon monoxide (CO), Carbon dioxide (CO2)

3. Advice for firefighters

In case of fire and/or explosion do not breathe fumes. Fight fire with normal precautions from a reasonable distance. Co-ordinate

firefighting measures to the fire surroundings. Do not allow firefighting water to enter drains or water courses. Collect contaminated

firefighting water separately. Keep containers cool with water spray. Remove undamaged containers from heat radiation.

Precipitate combustion gases with water spray if possible.

Accidental release measures

1. Personal precautions, protective equipment and emergency procedures

For non-emergency personnel

Remove persons to safety.

For emergency responders

Wear breathing apparatus if exposed to vapours/dust/spray/gases.

2. Environmental precautions

Keep away from drains, surface and ground water. Retain contaminated washing water and dispose of it.

3. Methods and material for containment and cleaning up

Advice on how to contain a spill

Covering of drains, Take up mechanically

Advice on how to clean up a spill

Take up mechanically.

Appropriate containment techniques

Neutralisation techniques.

Other information relating to spills and releases

Place in appropriate containers for disposal. Ventilate affected area.

4. Reference to other sections: Hazardous combustion products: see section "Firefighting measures". Personal protective equipment: see section "Exposure controls/personal protection". Incompatible materials: see section "Stability and reactivity". Disposal considerations: see section "Disposal considerations".

Handling and storage

This substance is handled under Strictly Controlled Conditions in accordance with REACH regulation Article 18(4) for transported isolated intermediates. 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 affected Distributor and Downstream Manufacturer/User of the Registrant's intermediate.

1. Precautions for safe handling

Recommendations

- measures to prevent fire as well as aerosol and dust generation

Use local and general ventilation. Take precautionary measures against static discharge. Use only in well-ventilated areas.

Ground/bond container and receiving equipment.

- specific notes/details

Dust deposits may accumulate on all deposition surfaces in a technical room. The product in the delivered form is not dust explosion

capable; the enrichment of fine dust however leads to the danger of dust explosion.

- handling of incompatible substances or mixtures

Do not mix with alkali.

- keep away from

Caustic solutions

Advice on general occupational hygiene

Wash hands after use. Do not eat, drink and smoke in work areas. Remove contaminated clothing and protective equipment before

entering eating areas. Never keep food or drink in the vicinity of chemicals. Never place chemicals in containers that are

normally used for food or drink. Keep away from food, drink and animal feedingstuffs.

2. Conditions for safe storage, including any incompatibilities

Managing of associated risks

- explosive atmospheres

Removal of dust deposits.

- ventilation requirements

Use local and general ventilation.

- packaging compatibilities

Only packagings which are approved (e.g. acc. to ADR) may be used.

3. Specific end use(s)

No information available.

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

3261

Shipping information

Proper shipping name and description:

CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.

Chemical name:

2-Butynoic acid

Language:

English

Labels:

8

Special provisions / remarks

Special provisions:

274

Remarks:

Excepted quantities (EQ) E2
Limited quantities (LQ) 1 kg
Transport category (TC) 2
Tunnel restriction code (TRC) E
Hazard identification No 80
Emergency Action Code 2X

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

UN number:

3261

Shipping information

Proper shipping name and description:

CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.

Chemical name:

2-Butynoic acid

Language:

English

Labels:

8

Special provisions / remarks

Remarks:

Special provisions (SP) 274
Excepted quantities (EQ) E2
Limited quantities (LQ) 1 kg
Transport category (TC) 2
Tunnel restriction code (TRC) E
Hazard identification No 80
Emergency Action Code 2X

Marine transport (UN RTDG/IMDG)

UN number:

3261

Shipping information

Proper shipping name and description:

CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.

Chemical name:

2-Butynoic acid

Labels:

8

Special provisions / remarks

Remarks:

Special provisions (SP) 274
Excepted quantities (EQ) E2
Limited quantities (LQ) 1 kg
Stowage category B
Segregation group 1 - Acids

Air transport (UN RTDG/ICAO/IATA)

UN number:

3261

Shipping information

Proper shipping name and description:

Corrosive solid, acidic, organic, n.o.s.

Chemical name:

2-Butynoic acid

Labels:

8

Special provisions / remarks

Remarks:

Special provisions (SP) A3
Excepted quantities (EQ) E2
Limited quantities (LQ) 5 kg
ERG Code 8L

SpecialProvisions

Exposure controls / personal protection

This substance is handled under Strictly Controlled Conditions in accordance with REACH regulation Article 18(4) for transported isolated intermediates. 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 affected Distributor and Downstream Manufacturer/User of the Registrant's intermediate.

1. Control parameters

This information is not available.

2. Exposure controls

Appropriate engineering controls

Local and general ventilation.

Individual protection measures (personal protective equipment)

Eye/face protection

Wear eye/face protection.

Skin protection

- hand protection

Wear protective gloves.

- type of material NBR: acrylonitrile-butadiene rubber

- material thickness 0,11 mm

- breakthrough times of the glove material >480 minutes (permeation: level 6)

- other protection measures

For special purposes, it is recommended to check the resistance to chemicals of the protective gloves mentioned above together

with the supplier of these gloves. In the case of wanting to use the gloves again, clean them before taking off and air them

well.

Take recovery periods for skin regeneration. Preventive skin protection (barrier creams/ointments) is recommended. Wash

hands thoroughly after handling. Protective clothing against liquid chemicals. Footwear protecting against chemicals.

Respiratory protection

In case of inadequate ventilation wear respiratory protection. Particulate filter device (EN 143).

Environmental exposure controls

Use appropriate container to avoid environmental contamination. Keep away from drains, surface and ground water.

Stability and reactivity

1. Reactivity

Concerning incompatibility: see below "Conditions to avoid" and "Incompatible materials".

2. Chemical stability

See below "Conditions to avoid".

3. Possibility of hazardous reactions

No known hazardous reactions.

4. Conditions to avoid

There are no specific conditions known which have to be avoided.

Hints to prevent fire or explosion

The product in the delivered form is not dust explosion capable; the enrichment of fine dust however leads to the danger of dust

explosion.

5. Incompatible materials

Bases, strong reducing agents

6. Hazardous decomposition products

Hazardous combustion products: see section "firefighting measures"

Disposal considerations

Waste treatment methods

Waste treatment-relevant information

Dispose of contents/container in accordance with local/regional/national/international regulations.

Sewage disposal-relevant information

Do not empty into drains. Avoid release to the environment. Refer to special instructions/safety data sheets.

Waste treatment of containers/packagings

It is a dangerous waste; only packagings which are approved (e.g. acc. to ADR) may be used. Completely emptied packages

can be recycled. Handle contaminated packages in the same way as the substance itself.

Remarks

Please consider the relevant national or regional provisions. Waste shall be separated into the categories that can be handled

separately by the local or national waste management facilities.