Molecular Structure:

Molecular Formula: C₁₉H₁₀Br₂Cl₂O₅S
Molecular Weight: 581.0587
IUPAC Name: 2-Bromo-4-[3-(3-bromo-5-chloro-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-6-chlorophenol
Synonyms of Bromochlorophenol Blue (CAS NO.2553-71-1): Bromchlorophenol blue ; EINECS 219-861-0 ; NSC 7816  ; 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-bromo-6-chlorophenol) S,S-dioxide ; Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-chloro-, S,S-dioxide (8CI)(9CI)
CAS NO: 2553-71-1
Product Categories: Industrial/Fine Chemicals ; Analytical Chemistry ; Indicator (pH) ; pH Indicators
Melting point: 230 °C 
Index of Refraction: 1.724
Molar Refractivity: 117.47 cm³
Molar Volume: 296 cm³
Surface Tension: 72.6 dyne/cm
Density: 1.962 g/cm³
Flash Point: 318.4 °C
Enthalpy of Vaporization: 92.99 kJ/mol
Boiling Point: 602.9 °C at 760 mmHg
Vapour Pressure of Bromochlorophenol Blue (CAS NO.2553-71-1): 3.93E-15 mmHg at 25°C

Hazard Codes of Bromochlorophenol Blue (CAS NO.2553-71-1): Xn
Risk Statements: 20/21/22-36/37/38 
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36-26 
S24/25: Avoid contact with skin and eyes. 
S36: Wear suitable protective clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
HS Code: 29349990