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EINECS 202-436-9
CAS No. 95-63-6 Density 0.869 g/cm3
PSA 0.00000 LogP 2.61180
Solubility Soluble in alcohol, benzene and ether. Slightly soluble in water Melting Point -44 °C
Formula C9H12 Boiling Point 170.8 °C at 760 mmHg
Molecular Weight 120.20 Flash Point 48.9 °C
Transport Information UN 3295 3/PG 3 Appearance clear liquid
Safety 26-61-45-36/37-16-7 Risk Codes 10-20-36/37/38-51/53-39/23/24/25-23/24/25-11
Molecular Structure Molecular Structure of 95-63-6 (1,2,4-TRIMETHYL BENZENE) Hazard Symbols HarmfulXn, DangerousN, FlammableF, ToxicT, IrritantXi

1,2,5-Trimethylbenzene;1,3,4-Trimethylbenzene;Methyl-p-xylene;NSC 65600;Pseudocumene;Pseudocumol;pseudo-Cumene;y-Cumene;


1,2,4-TRIMETHYL BENZENE Chemical Properties

Product Name:1,2,4-Trimethylbenzene
Molecular formula:C9H12
Molecular Weight:120.19
EINECS: 202-436-9
Melting point:-44 °C
Boiling point:168 °C(lit.)
refractive index:n20/D 1.504(lit.)
Fp:120 °F

1,2,4-TRIMETHYL BENZENE is stored at 2-8°C .Its density is 0.88,vapor density is  4.1 (vs air),and vapor pressure is 4.5 mm Hg ( 37.7 °C).

1,2,4-TRIMETHYL BENZENE Toxicity Data With Reference


orl-rat LD50:5 g/kg

   85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,34.

ihl-rat LC50:18 g/m3/4H

   GISAAA    Gigiena i Sanitariya. 44 (5)(1979),15.

ipr-rat LDLo:1752 mg/kg

   MEIEDD    Merck Index. 10 (1983),1141.

ipr-gpg LDLo:1788 mg/kg

   AMIHBC    AMA Archives of Industrial Hygiene and Occupational Medicine. 9 (1954),227.

1,2,4-TRIMETHYL BENZENE Consensus Reports

Reported in EPA TSCA Inventory. Community Right-To-Know List.

1,2,4-TRIMETHYL BENZENE Safety Profile

Moderately toxic by intraperitoneal route. Mildly toxic by inhalation. Can cause central nervous system depression, anemia, bronchitis. Flammable liquid when exposed to heat, sparks, or flame. To fight fire, use foam, alcohol foam, mist. Emitted from modern building materials ( CENEAR    Chemical and Engineering News. 69 (1991),22. ). When heated to decomposition it emits acrid smoke and irritating fumes.

1,2,4-TRIMETHYL BENZENE's Risk Statements:10-20-36/37/38-51/53-39/23/24/25-23/24/25-11
11:  Highly Flammable   
20:Harmful by inhalation
36/37/38:Irritating to eyes, respiratory system and skin 
51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment 
39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed 
23/24/25:Toxic by inhalation, in contact with skin and if swallowed
1,2,4-TRIMETHYL BENZENE's Safety Statements:26-61-45-36/37-16-7
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
61:Avoid release to the environment. Refer to special instructions safety data sheet 
45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 
36/37:Wear suitable protective clothing and gloves 
16:Keep away from sources of ignition - No smoking 
7:Keep container tightly closed 

Hazard Codes:Xn,N,F,Xi,T
RIDADR:UN 3295 3/PG 3
WGK Germany:2
Hazard Note:Irritant/Flammable

1,2,4-TRIMETHYL BENZENE Standards and Recommendations

OSHA PEL: TWA 25 ppm
DFG MAK: 20 ppm

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