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o-Cresolphthalein

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[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.
[Ingestion]

Never give anything by mouth to an unconscious person. 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]

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
[Storage]

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
[Handling]

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
[Ingestion]

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
[Inhalation]

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
[Skin]

May cause skin irritation. The toxicological properties of this material have not been fully investigated.
[Eyes]

May cause eye irritation. The toxicological properties of this material have not been fully investigated.
[EC Safety Phrase]

S 22 24/25
[Personal Protection]

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles 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.
[Appearance]

White or yellow-white solid.
[Solubility in water]

Insoluble
[Melting Point]

221.3 - 223.6
[pKa/pKb]

9.61 (pKa)
[Usage]

Used as a indicator: ph range, 8.2 Colorless, 9.8 Red.
[Vapor Density]

11.9
[Product Name]

3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone
[Synonyms]

1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-
3,3-Bis(3-methyl-4-hydroxyphenyl)phthalide
3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one
3',3''-Dimethylphenolphthalein
[CAS]

"CASEN_596-27-0.htm">596-27-0
[Formula]

C22H18O4
[Molecular Weight]

346.38
[EINECS]

209-881-8
[RTECS]

SM8390000
[RTECS Class]

Other
[Merck]

13,2605
[Beilstein/Gmelin]

310554
[Beilstein Reference]

5-18-04-00193
[Small spills/leaks]

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
[Incompatibilities]

Oxidizing agents.
[Stability]

Stable under normal temperatures and pressures.
[Decomposition]

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.