Product Identification
【Product Name】2,2'-Dihydroxy-4,4'-dimethoxybenzophenone
【Synonyms】Cyasorb UV；2,2'-二羟基-4,4'-二甲氧基二苯甲酮
【CAS】131-54-4
【Formula】C15H14O5
【Molecular Weight】274.27
【EINECS】205-027-3
【RTECS】DJ0900000
【RTECS Class】Mutagen
【Merck】13,1100
【Beilstein/Gmelin】1887087
【Beilstein Reference】4-08-00-03505

Physical and Chemical Properties
【Appearance】Yellow granular powder.
【Solubility in water】Insoluble
【Melting Point】139~140℃
【Boiling Point】422℃
【pKa/pKb】6.80 (pKa)
【Partition Coefficient】2.21
【Usage】Used as a ultraviolet light absorber, esp in paints, plastics.

First Aid Measures
【Ingestion】If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
【Inhalation】Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
【Eyes】Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage
【Storage】Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification
【Inhalation】Causes respiratory tract irritation. Causes irritation of mucous membrane.
【Skin】Causes skin irritation.
【Eyes】Causes eye irritation.
【Ingestion】May cause irritation of the digestive tract.
【Hazards】During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
【EC Risk Phrase】R 36/37/38
【EC Safety Phrase】S 26 36
【UN (DOT)】1325

Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety ggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
【Respirators】Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
【Exposure Effects】The toxological properties of this substance have not been fully investigated.

Fire Fighting Measures
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire.
【Fire Potential】Flammable/combustible material. May be ignited by friction, heat, sparks or flames.

Accidental Release Measures
【Small spills/leaks】Clean up spills immediately, using the appropriate protective equipment. Provide ventilation.

Stability and Reactivity
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidizing agents.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, acrid smoke and fumes.
【Combustion Products】Fire may produce irritating and/or toxic gases.

Transport Information
【UN Number】1325
【Hazard Class】4.1
【Packing Group】II; III