para Cymene

p-Cymene is transparent liquid, found in essential oils, has a tang of terpenes with orange odor or carrot odor. It can be extracted from Dipentene on the reactions of dehydrogenation and disproportionation by Raney nickel or Pd/C as catalyst. In this method, it is easy separating and have a higher yield than alkylation by Toluene. The great quality of p-Cymene used as material to synthesis Tonalide.

Substance Identification

Synonyms ρ-Cymene | 1-Isopropyl-4-methylbenzene, 4-Isopropyltoluene
CAS 99-87-6
EINECS 202-796-7
FEMA 2356
HS.CODE 290420
Molecular Formula C10H14
Moleclar Weight 134.22

Application & Uses

  • the great quality of p-Cymene used as material to synthesis Tonalide
  • food flavors
  • flavors of daily products, such as soaps, cleaning solvent
  • pharmaceutical ingredients, has expectorant, cough efficacy

Sales Specification

Appearance Slightly yellow viscous liquid
Purity, GC, % ≥98
Refractive Index, @ n20/D 1.488~1.492
Relative Density, @ d20/20 0.854~0.860
Moisture, by K.F, % ≤0.1
Iodine Value ≤2.0


  • Galvanized Iron Drum, 175kg, 80 drums per 20’FCL

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GHS Hazard Statements

H-Code H226/303/304/331/361/411
P-Code P201/202/210/233/240/241/242/243/261/271/273/280
Response P301+P310 P303+P361+P353 P304+P340+P311 P312 P331 P370+P378 P391
Storage P403+P233 P403+P235 P405
Disposal P501
UN Number: UN 2046 3/PG 3 | S-phrases: S26-S36 | R-phrases: R10;R36/37/38


  • containers which are opened must be carefully resealed and kept upright to prevent leakage
  • keep container tightly closed in a dry and well-ventilated place
  • store in cool place


The above information is believed to be accurate and presents the best explanation currently available to us. We assume no liability resulting from above content. The technical standards are formulated and revised by customers’ requirement and us, if there are any changes, the latest specification will be executed and confirmed in the contract.

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