Product Identification
【Product Name】2,2',4,4'-Tetrahydroxybenzophenone
【Synonyms】Benzophenone 2     2,2',4,4'-四羟基二苯甲酮
【CAS】131-55-5
【Formula】C13H10O5
【Molecular Weight】246.22
【EINECS】205-028-9
【RTECS】DJ1892000
【RTECS Class】Mutagen; Primary Irritant
【Beilstein/Gmelin】2347951

Physical and Chemical Properties
【Appearance】Yellow crystalline powder.
【Solubility in water】Insoluble
【Melting Point】196-198℃
【Boiling Point】100 - 102 (40 torr)
【Density】1.498 g/cm3
【pKa/pKb】6.98 (pKa)
 
First Aid Measures
【Ingestion】Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
【Inhalation】Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage
【Storage】Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】Wash thoroughly after handling. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse.

Hazards Identification
【Inhalation】Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
【Skin】Causes skin irritation.
【Eyes】Causes eye irritation.
【Ingestion】May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
【EC Risk Phrase】R 22 36/37/38
【EC Safety Phrase】S 26 36/37/39
【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】A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
【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. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
【Fire Potential】Flammable/combustible material. May be ignited by friction, heat, sparks or flames.

Accidental Release Measures
【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity
【Stability】Stable at room temperature in closed containers under normal storage and handling conditions.
【Incompatibilities】Strong bases, strong oxidizing agents.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
【Combustion Products】Fire may produce irritating and/or toxic gases.

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