Name | 4-Ethylbenzoic acid |
Synonyms | 4-ethylbenzoate The ethyl benzoate RARECHEM AL BO 1281 P-ETHYLBENZOIC ACID 4-Ethylbenzoic acid 4-Ethyl Benzoic acid Benzoic acid, 4-ethyl- benzoic acid, 4-ethyl- Benzoic acid, p-ethyl- |
CAS | 619-64-7 |
EINECS | 210-605-3 |
InChI | InChI=1/C9H10O2/c1-2-7-3-5-8(6-4-7)9(10)11/h3-6H,2H2,1H3,(H,10,11)/p-1 |
InChIKey | ZQVKTHRQIXSMGY-UHFFFAOYSA-N |
Molecular Formula | C9H10O2 |
Molar Mass | 150.17 |
Density | 1.0937 (estimate) |
Melting Point | 112-113°C(lit.) |
Boling Point | 271.51°C (estimate) |
Flash Point | 125.1°C |
Solubility | Chloroform (Sparingly), Methanol (Slightly) |
Vapor Presure | 0.00338mmHg at 25°C |
Appearance | White crystal |
Color | White to beige |
BRN | 2041840 |
pKa | pK1:4.35 (25°C) |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.5188 (estimate) |
MDL | MFCD00002570 |
Physical and Chemical Properties | This product is white crystal, m.p.112 ~ 113 ℃, insoluble in water, soluble in benzene, toluene. |
Use | Used as liquid crystal raw materials and intermediates, also used in the production of pesticides |
Risk Codes | R22 - Harmful if swallowed R36/37 - Irritating to eyes and respiratory system. |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
WGK Germany | 3 |
HS Code | 29163900 |
Hazard Note | Irritant |
Raw Materials | Aluminum chloride Oxygen Acetyl Chloride |
NIST chemical information | information provided by: webbook.nist.gov (external link) |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Use | 4-ethylbenzoic acid is an intermediate of the insecticide fenozide, methoxyfenozide. chemical intermediates. used as liquid crystal raw materials and intermediates, can also be used for carbon nanotube material initiator, can also be used for the production of pesticides. used as liquid crystal raw materials and intermediates, also used in the production of pesticides |
production method | the preparation method is to add ethylbenzene and trichloroacetaldehyde in the reactor, and add anhydrous aluminum trichloride in batches at 0 ℃, after addition, stir the reaction at -10~0 ℃ for 2H, then add dilute hydrochloric acid to the mixture to decompose the remaining aluminum trichloride, then wash with NaHCO3 and water, and recover ethylbenzene by distillation of organic layer, the mixture was distilled to obtain p-Ethylbenzene -2,2, 2-trichloroethanol, and then the trichloroethanol was dissolved in methanol, and then NaOH solution was added to stir. In the mixture, 30% aqueous hydrogen peroxide was added dropwise, the mixture was stirred until the trichloroethanol disappeared and then acidified with HCl to give crystals, I .e., the product. |