1,1,1,2-Tetrabromoethane (25167-20-8) is also named as 1,1,1,2-Tetrabromo-ethan ; Ethane, 1,1,1,2-tetrabromo- ; Ethane,1,1,1,2-tetrabromo- ; UN2504 ; CID61179 ; BRN 1733245 ; LS-1517 ,and so on.

IUPAC Name: 1,1,1,2-Tetrabromoethane
CAS: 25167-20-8
Molecular Formula: C₂H₂Br₄
Molecular Weight: 345.65
Molecular structure:
EINECS: 211-130-4
ACD/LogD (pH 5.5): 4.12 
ACD/LogD (pH 7.4): 4.12 
ACD/BCF (pH 5.5): 794.28 
ACD/BCF (pH 7.4): 794.28 
ACD/KOC (pH 5.5): 4143.82 
ACD/KOC (pH 7.4): 4143.82 
H bond acceptors: 0 
H bond donors: 0 
Freely Rotating Bonds: 0 
Index of Refraction: 1.66 
Molar Refractivity: 42.2 cm³ 
Molar Volume: 114.3 cm³ 
Polarizability: 16.73 10^-24cm³ 
Surface Tension: 57.9 dyne/cm 
Density: 3.023 g/cm³ 
Flash Point: 91.9 °C 
Enthalpy of Vaporization: 44.56 kJ/mol 
Boiling Point: 227.9 °C at 760 mmHg 
Vapour Pressure: 0.114 mmHg at 25°C 

 1,1,1,2-Tetrabromoethane (25167-20-8) is commonly used as additive agent for PET.

RTECS:  KI8225000

Hazard Codes:  T+
Risk Statements:  26-36-52/53 (26:  Very Toxic by inhalation 36:  Irritating to the eyes 52/53:  Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment)
Safety Statements:  24-27-45-61 (24:  Avoid contact with skin 27:  Take off immediately all contaminated clothing 45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 61:  Avoid release to the environment. Refer to special instructions safety data sheet)
RIDADR:  UN 2504 6.1/PG 3
WGK Germany:  2
F:  8

Removal in wastewater treatment of 1,1,1,2-Tetrabromoethane (25167-20-8) can be stated as follows:
Total removal:9.90  percent
Total biodegradation:0.15  percent
Total sludge adsorption:8.87  percent
Total to Air:0.87  percent
(using 10000 hr Bio P,A,S)