1H-2-Benzopyran-1,4(3H)-dione

Guidance on Safe Use

First-aid measures

Ingestion:Never attempt to induce vomiting. Do not attempt to give any solid or liquid by mouth if the

exposed subject is unconscious or semi-conscious. Wash out the mouth with water. If the

exposed subject is fully conscious, give plenty of water to drink. Obtain medical attention.

Inhalation Using appropriate personal protective equipment, move exposed subject to fresh air. If breathing

is difficult or ceases, ensure and maintain ventilation. Give oxygen as appropriate. The exposed

subject should be kept warm and at rest. Obtain medical attention in cases of known or possible

over exposure, or with symptoms including chest pain, difficulty breathing, loss of consciousness

or other adverse effects, which may be delayed.

Skin contact Using appropriate personal protective equipment, remove contaminated clothing and flush

exposed area with large amounts of water. Obtain medical attention if skin reaction occurs, which

may be immediate or delayed.

Eye contact Wash immediately

Fire-fighting measures

Water, dry powder or foam extinguishers are recommended. Carbon dioxide extinguishers may be

ineffective

Accidental release measures

Fence or cordon the affected area and do not allow individuals to touch or walk through the spilled

material unless wearing appropriate protective clothing. Avoid dust generation

Prevent entry into waterways, sewers, surface drainage systems and poorly ventilated areas. If

spill is outdoors, cover with plastic sheet to minimise spreading or contact with rain.

Collect and place it in a suitable, properly labelled container for recovery or disposal. After all solid

or absorbent material has been collected, the area should be vacuumed with HEPA

filter-equipped apparatus.

Handling and storage

Avoid dispersion as a dust cloud.

Depending upon the scale of operation, use of appropriate exhaust ventilation is recommended to

provide routine control of fire and explosion hazards during handling of this material.

Keep in tightly closed containers or packages away from moisture and away from sources of

ignition.

Avoid prolonged storage at elevated temperatures (greater than room temperature, approximately

20 degrees C).

Transport information

Shipping

SpecialProvisions

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

Shipping

Special provisions / remarks

Remarks:

Not hazardous for Transportation

Shipping

Remarks

SpecialProvisions

Exposure controls / personal protection

The hygiene guide for this material is >10 to 100 mcg/m3

Open handling is not recommended. Consider segregating operations, use of enclosures and

sealed transfer systems.Entry to the working area should be controlled. Doors with interlocks may be needed for materials

airlocks and locker rooms. Only equipment and supplies necessary for job activities should be

taken into working area.

Wear approved safety glasses with side shields or cover goggles if eye contact is possible.The selection of gloves for a specific activity must be based on the material's properties and on possible permeation and degradation that may occur under the circumstances of use.Glove selection must take into account any solvents and other hazards present.

respiratory protective equipment (RPE) is used, the type of RPE will depend upon air concentrations present, required protection factor as well as hazards, physical properties and warning properties of substances present.

Stability and reactivity

Avoid direct sunlight, conditions that might generate heat and dispersion as a dust cloud.

Disposal considerations

Collect for recycling or recovery if possible. The recommended method of disposal is incineration.

Wherever possible, disposal should be in an on-site licenced chemical incinerator, if allowed by

the incinerator licence or permit. If no on-site incinerator is available, dispose of material in a

licenced commercial chemical incinerator.