Chlorophenol Red

Chemical Name: Chlorophenol red
IUPAC NAME: 2-Chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxobenzo[c]oxathiol-
3-yl]phenol
CAS No.: 4430-20-0
EINECS: 224-619-2
Molecular Formula: C₁₉H₁₂Cl₂O₅S
Formula Weight: 423.27 g/mol
Melting Point: 261 °C
Density: 1.605 g/cm³ 
Flash Point: 306.4 °C
Boiling Point: 583 °C at 760 mmHg
 Chlorophenol red (4430-20-0) is an indicator dye that changes color from yellow to violet in the pH range 4.8 to 6.7. The lamda max is at 572 nm.it is stable at normal temperatures and pressures.but incompatible with strong oxidizing agents.Following is the structure:

Product Categories about Chlorophenol red (4430-20-0) are Organics ; Analytical Chemistry ; Indicator (pH) ; pH Indicators
The chemical synonymous of Chlorophenol red (4430-20-0) are BETZ 0416 ; CPR ; Chlorophenol red ; Dichlorophenolsulfonephthalein ; 3',3''-Dichlorophenolsulfonaphthalein ; 3,3'-Dichlorophenol sulfonephthalein

Hazard Codes:
Xi: Irritant
Risk Statements about Chlorophenol red (4430-20-0):
R36/37/38 Irritating to eyes, respiratory system and skin.
Safety Statements about Chlorophenol red (4430-20-0):
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39 Wear suitable gloves and eye/face protection. 
Attentions:
1. Storage: Store in a cool, dry place. Keep container closed when not in use.
2. Handling: Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
3. 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 minimize contact with skin.
4. 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. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.