para Cymene
p-Cymene is a transparent liquid with a scent of terpenes and an orange or carrot odour. It can be extracted from Dipentene via dehydrogenation and disproportionation reactions, using Raney nickel or Pd/C as a catalyst. This method offers easier separation and a higher yield compared to alkylation by Toluene.
The high quality p-Cymene is primarily used as a material to synthesize Tonalide. Furthermore, it is also used as food flavours, in daily products like soaps and cleaning solvents, and as a pharmaceutical ingredient with expectorant and cough efficacy.
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
- High quality p-Cymene is used as a material to synthesize Tonalide.
- Utilised as food flavours.
- Applied as flavouring for daily products, such as soaps and cleaning solvents.
- Serves as a pharmaceutical ingredient, possessing expectorant and cough efficacy.
Sales Specification
| ITEM | VALUE |
|---|---|
| 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 |
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 |
Storage
- Environmental & Temperature Control:
- Store in a cool, dry, well-ventilated area, and protect from light.
- Avoid high temperatures to maintain product stability and prevent decomposition or volatilisation.
- Keep in a cool, well-ventilated place.
- Container Management & Prevention:
- Ensure containers are tightly closed to prevent volatilisation and external contamination, and are clearly labelled.
- Ground all equipment containing the material to prevent static build-up.
- Hazard Isolation:
- Keep storage areas away from heat, sparks, open flames, and all sources of ignition.
- This combustible liquid should be stored in a separate safety storage cabinet or room.
- Keep away from incompatible materials to prevent hazardous reactions.
- Safe Handling & Inspection:
- Handle carefully, and stack stably.
- After prolonged storage, always check quality before use.
- Compliance & Emergency Preparedness:
- Strictly comply with all safety regulations, particularly those pertaining to combustible liquid storage.
- Ensure emergency plans are in place for unforeseen circumstances.
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Remark
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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