Name | 1,2,4-Trimethylbenzene |
Synonyms | PSI-CUMENE PSEUDOCUMOL PSEUDOCUMENE Pseudocumene TRIMETHYLBENZENE 1,2,4-Trimethylbenzere 1,3,4-TRIMETHYLBENZENE 1,2,4-trimethyl-benzen 1,2,4-Trimethylbenzene 1,2,4-TRIMETHYLBENZENE 1,2,4-trimethylbenzene (pseudocumene) |
CAS | 95-63-6 |
EINECS | 202-436-9 |
InChI | InChI=1/C9H12/c1-7-4-5-8(2)9(3)6-7/h4-6H,1-3H3 |
InChIKey | GWHJZXXIDMPWGX-UHFFFAOYSA-N |
Molecular Formula | C9H12 |
Molar Mass | 120.19 |
Density | 0.876 g/mL at 20 °C(lit.) |
Melting Point | -44 °C |
Boling Point | 168°C(lit.) |
Flash Point | 120°F |
Water Solubility | Soluble in alcohol, benzene and ether. Slightly soluble in water |
Solubility | 0.057g/l |
Vapor Presure | 4.5 mm Hg ( 37.7 °C) |
Vapor Density | 4.1 (vs air) |
Appearance | Liquid |
Color | Clear colorless |
Exposure Limit | NIOSH REL: TWA 25 ppm (125 mg/m3); ACGIH TLV: TWA for mixedisomers 25 ppm (adopted). |
Merck | 14,7915 |
BRN | 1903005 |
pKa | >14 (Schwarzenbach et al., 1993) |
Storage Condition | Store below +30°C. |
Stability | Stable. Incompatible with strong oxidizing agents. Flammable. May form explosive mixtures with air. |
Explosive Limit | 0.8-7%(V) |
Refractive Index | n20/D 1.504(lit.) |
Physical and Chemical Properties | Character: colorless transparent liquid. melting point -43.8 ℃ boiling point 169.4 ℃ relative density 0.8758 refractive index 1.5048 flash point 48 ℃ solubility insoluble in water, soluble in ethanol, ether and benzene. |
Use | Used in the production of PVC plastic plasticizer trioctyl trimethylene, powder coating, motor temperature resistant insulating paint |
Risk Codes | R10 - Flammable R20 - Harmful by inhalation R36/37/38 - Irritating to eyes, respiratory system and skin. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R39/23/24/25 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable R65 - Harmful: May cause lung damage if swallowed |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S16 - Keep away from sources of ignition. S7 - Keep container tightly closed. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. |
UN IDs | UN 3295 3/PG 3 |
WGK Germany | 2 |
RTECS | DC3325000 |
TSCA | Yes |
HS Code | 29029090 |
Hazard Note | Irritant/Flammable |
Hazard Class | 3 |
Packing Group | III |
Toxicity | LD50 i.p. in male, female mice (mg/kg): 5000, 4100 (Janik-Spiechowicz) |
colorless liquid. Insoluble in water, soluble in ethanol, ether and benzene. Melting Point -44 °c. Boiling point 168 °c. Relative density (Hu o)0.8758. Refractive index 5048. Flash point 48 °c. The combustion heat was 5206 KJ.
obtained by separation from c9-clo aromatics obtained from catalytic reforming and naphtha cracking. The content of meta-trimethylbenzene in reforming aromatics is more than 40%. More than 99% pure product can be obtained by distillation.
This product is the basic organic chemical raw materials, can be used in the production of Medicine (vitamin E), dyes and synthetic resin. It can also produce trimellitic anhydride, pyromellitic dianhydride, water-soluble alkyd resin, unsaturated polyester resin and plasticizer, epoxy resin curing agent and surfactant.