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Guidance on Safe Use

Guidance on Safe Use

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First-aid measures

General advice
Remove soiled, soaked clothing immediately. Medical treatment is necessary if symptoms occur which are obviously caused by skin, or eye contact
with the product or by inhalation of its vapours.
Move subject to fresh air and keep him calm. Contact a doctor immediately.
Eye contact
Keeping the eyelids apart flush thoroughly with water immediately. Protect uninjured eye. Call ambulance (cue: caustic burn of the eyes). Continue
rinsing eye until arrival at ophthalmic hospital.
Skin contact
In case of contact with the skin wash off immediately with plenty of water. Contact a doctor immediately.
Rinse out mouth and give plenty of water to drink. Do not induce vomiting. Contact a doctor immediately.

Fire-fighting measures

Suitable extinguishing media
water spray, foam, dry chemical, carbon dioxide
Extinguishing media which must not be used for safety reasons
full water jet
Special protective equipment for fire fighters
Wear self-contained breathing apparatus.

Accidental release measures

Personal precautions
Do not breathe dust or mist. Wash hands thoroughly with soap and water after handling. Do no eat, drink or smoke when using this product. Wear
protective gloves/protective clothing/eye protection. Take care for adequate ventilation. Keep away sources of ignition.
Environmental precautions
Avoid release to the environment.
Prevent product from getting into drains/surface water/groundwater.
Methods of cleaning up
Larger quantities: Remove mechanically (by pumping). Use explosion-proof equipment! Smaller quantities and/or residues: Contain with absorbent
material (e.g. sand, diatomaceous earth, acid absorbent, universal absorbent or sawdust). Dispose of in accordance with regulations.

Handling and storage

Safe handling advice
Keep container tightly closed. Provide good room ventilation even at ground level (vapours are heavier than air). Methacrylic acid freezes at 15°C
(59°F). Improper thawing can result in violent polymerization. The thawing of frozen drums can best be accomplished by placing them in a heated
room at temperatures up to 40°C (104°F). This will allow the acid to melt slowly within a 48-hour period. DO NOT remove any material if stock is
frozen or partially frozen. Mix during and after thawing to properly distribute inhibitor. NEVER use steam or electric heating bands.
Advice on protection against fire and explosion
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
Take precautionary measures against static discharges. In the event of fire, cool the endangered containers with water. When heated above the flash
point and/or during spraying (atomizing), ignitible mixtures may form in air.
Requirements for storage areas and containers
Fill the container by approximately 90 % only as oxygen (air) is required for stabilisation. With large storage containers make sure the oxygen (air)
supply is sufficient to ensure stability. Protect from light. Maintain the temperature of the methacrylic acid between 18°C and approx. 35°C. The ideal storage temperature is 20-25°C. Depending on the weather situations, temperatures up to 40°C may be applied during transport. Can polymerize
with intense heat release.

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

Hazard no. 89
Shipping information
Proper shipping name and description:
SpecialProvisionsopen allclose all

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

UN number:
Shipping information
Proper shipping name and description:
Remarksopen allclose all

Marine transport (UN RTDG/IMDG)

UN number:
Shipping information
Proper shipping name and description:
Remarksopen allclose all

Air transport (UN RTDG/ICAO/IATA)

UN number:
Shipping information
Proper shipping name and description:
Remarksopen allclose all
SpecialProvisionsopen allclose all

Exposure controls / personal protection

Components or products of decomposition, with limit values related to the place of work which require monitoring
methacrylic acid 79-41-4
In the EU no community IOLV exists, but a large number of EU member states have established national occupational exposure limits for MAA. The majority has adopted 20 ppm / 70-72 mg/m³ (AT, BE, DK, FIN, FR, GR, IS, IE, IT, PT, ES, SE, GB (*)), while a smaller number of EU member states have established lower limits (LV, RO). In DE the MAK commission recommends a long-term value of 5 ppm/18 mg/m³ (DFG-MAK, 2009) (*))
(*)= ISO 3166-code

Exposure controls
For monitoring procedures, for instance, refer to "Empfohlene Analysenverfahren für Arbeitsplatzmessungen", Schriftenreihe der Bundesanstalt für Arbeitsschutz, Germany, or "NIOSH Manual of Analytical Methods", National Institute for Occupational Safety and Health, USA

Critical component Routes of exposure Workers Industry/trade
methacrylic acid Inhalation (Long-term) 30 mg/m³
methacrylic acid dermal (Long-term) 11.4 mg/kg/d
methacrylic acid Oral (Long-term) -

Critical component Routes of exposure Workers Industry/trade
methacrylic acid water (Long-term) 0.82 mg/l
methacrylic acid Soil (Long-term) -
methacrylic acid Air (Long-term) -

Protective measures
Do not inhale vapours. Absolutely avoid contact with the eyes and/or skin. Safety shower and eye wash fountain should be available.
Hygiene measures
Store work clothing separately. Remove soiled or soaked clothing immediately. Follow the usual good standards of occupational hygiene. Clean skin thoroughly after work; apply skin cream.
Respiratory protection
Breathing apparatus in case of high concentrations, short-term: filter appliance, filter type A or combination filter ABEK
Hand protection
Wear suitable gloves. The most appropriate glove will depend on consideration of a number of factors including the physical strength of the glove, the degree of manual dexterity required, the amount of permeation through the glove material and perhaps the cost of the glove. Gloves made from butyl rubber, Viton® or PVA/Polyethylene laminate offer the best protection. Gloves should be changed regularly and if excessive exposure has occurred.
Example: butyl rubber gloves (0.7 mm), Break through time 300 min (EN 374)
In practice, due to variable exposure conditions, this information can only be an aid to orientation for the selection of a suitable chemical protection glove. In particular, this information does not substitute suitability tests by the end user.
General information
Gloves should be replaced regularly, especially after extended contact with the product. For each work-place a suitable glove type has to be selected.
Eye protection
tightly fitting goggles
Skin and body protection
On handling of larger quantities: face mask, chemical-resistant boots and apron

Stability and reactivity

Conditions to avoid
The product is normally supplied in a stabilized form. If the permissible storage period and/or storage temperature is exceeded, the product may
polymerize with heat evolution. Caution: In case of thawing crystallised methacrylic acid do not use temperatures above 35 °C. Strictly follow
instructions of supplier.
Materials to avoid
Reactions with strong oxidizing agents.
Hazardous decomposition products
None when used as directed.
Thermal decomposition
No decomposition when used as directed.
Hazardous reactions
Polymerization with heat evolution may occur in the presence of radical forming substances (e.g. peroxides), reducing substances, and/or heavy
metal ions. Product reacts violently to explosively with alkali metals, alkalineearth metals, various metal powders, strong alkalis and ammonia.
Reactions with alkalis. Reacts vigorously with water producing heat. Contact with metals and water liberates hydrogen. Reactions with organic

Disposal considerations

Waste is hazardous. It must be disposed of in accordance with the regulations after consultation of the competent local authorities and the
disposal company in a suitable and licensed facility.
Uncleaned packaging
Contaminated packaging should be emptied optimally and after appropriate professional cleansing may be taken for reuse. Packaging that cannot be cleaned should be disposed of professionally.
Uncontaminated packaging may be taken for recycling.
Code of waste EWC
07 02 08
waste from the manufacture, formulation, supply and use (MFSU) of plastics, synthetic rubber and man-made fibres - other still bottoms and reaction residues
Always check the given waste codes according to the actual conditions of manufacturing, formulation or use in your facilities.

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