Molecular Formula: C₂₁H₁₃Br₄NaO₅S
Molar mass: 719.9957 g/mol
EINECS: 263-657-4
Flash Point: 332.4 °C
Boiling Point: 626 °C at 760 mmHg
Vapour Pressure: 2.91E-16 mmHg at 25°C
Melting point: 230 °C (dec.)(lit.)
Decomposition: 176-178 ºC
Structure of Bromocresol green sodium salt (CAS NO.62825-32-5):
                 
H-Bond Donor: 1
H-Bond Acceptor: 5
IUPAC Name: Sodium2-[(3,5-dibromo-4-hydroxy-2-methylphenyl)-(3,5-dibromo-2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate
Canonical SMILES: CC1=C(C(=C(C=C1C(=C2C=C(C(=O)C(=C2C)Br)Br)C3=CC=CC=C3S(=O)(=O)[O-])Br)O)
Br.[Na+]
InChI: InChI=1S/C21H14Br4O5S.Na/c1-9-12(7-14(22)20(26)18(9)24)17(11-5-3-4-6-16(11)31(28,29)30)13-8-15(23)21(27)19(25)10(13)2;/h3-8,26H,1-2H3,(H,28,29,30);/q;+1/p-1 
InChIKey: PZBRPDUUWGYUTE-UHFFFAOYSA-M

Carcinogenicity of Bromocresol green sodium salt (CAS NO.62825-32-5) hasn't been listed as a carcinogen by NTP, IARC,ACGIH, or CA Prop 65. And its toxicological properties have not been fully investigated.

Hazard Codes: Xi
Risk Statements:
R36:Irritating to eyes. 
R37:Irritating to respiratory system 
R38:Irritating to skin.
Safety Statements:
S22:Do not breathe dust. 
S24:Avoid contact with skin. 
S25:Avoid contact with eyes.

 Bromocresol green sodium salt ,its cas register number is 62825-32-5.It also can be called Sodium 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxido-3H-2,1-benzoxathiol-3-yl]-3-methylphenolate ; Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-3-methyl-, sodium salt (1:1) and 3',3",5',5"-tetrabromo-m-cresolsulfonphthalein sodium salt .
 Bromocresol green sodium salt (CAS NO.62825-32-5) is hazardous,so the first aid measures and others should be known.Such as: When on the skin: first,should  flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly,Get shoesmedical aid . Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon.While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately.Notes to physician: Treat supportively and symptomatically.
In addition, Bromocresol green sodium salt (CAS NO.62825-32-5) is not compatible with strong oxidizing agents, and you must not take it with incompatible materials.And also prevent it to broken down into hazardous decomposition products: carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen bromide.