Product Identification
【Product Name】Bromocresol Purple ；溴甲酚紫
【Synonyms】3H-2,1-Benzoxathiole, phenol deriv.
【CAS】115-40-2
【Formula】C21H16Br2O5S
【Molecular Weight】540.24
【EINECS】204-087-8
【Merck】13,1371
【Beilstein/Gmelin】359618
【Beilstein Reference】5-19-03-00460

Physical and Chemical Properties
【Appearance】Pale yellow or purple crystals or powder, odorless.
【Solubility in water】1 g/L
【Melting Point】242
【Usage】Used as a acid base indicator.
【Vapor Density】N/R

First Aid Measures
【Ingestion】If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid.
【Inhalation】Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
【Skin】Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
【Eyes】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】Keep away from heat, sparks, and flame. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification
【Ingestion】Ingestion of large amounts may cause gastrointestinal irritation. Expected to be a low ingestion hazard.
【Inhalation】May cause respiratory tract irritation. Low hazard for usual industrial handling.
【Skin】Dust may cause mechanical irritation. Low hazard for usual industrial handling.
【Eyes】Dust may cause mechanical irritation.
【EC Safety Phrase】S 22 24/25

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 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.

Fire Fighting Measures
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Water or foam may cause frothing.

Accidental Release Measures
【Small spills/leaks】Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.

Stability and Reactivity
【Disposal Code】3
【Stability】Stable under normal shipping and handling conditions. However, may decompose if heated.
【Incompatibilities】Strong oxidizing agents.
【Decomposition】Carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen bromide.

Transport Information
【HS Code】2934 99 90