CAS 104-09-6PubChem CID 61006
Lilac acetaldehyde
(4-Methylphenyl)acetaldehyde is a member of phenylacetaldehydes. — ChEBI
- IUPAC name
- 2-(4-methylphenyl)acetaldehyde
- Molecular formula
- C9H10O
- Molecular weight
- 134.17 g/mol
- Exact mass
- 134.073164938 Da
- XLogP3
- 1.9
- Topological polar surface area
- 17.1 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 1
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
(4-Methylphenyl)acetaldehydep-TolylacetaldehydeP-METHYLPHENYLACETALDEHYDEBENZENEACETALDEHYDE, 4-METHYL-4-MethylbenzeneacetaldehydeAcetaldehyde, p-tolyl-FEMA No. 3071Methylphenylacetaldehyde, p-
16 more reported names
EINECS 203-173-27L6760H4LHP-TOLYLACETALDEHYDE [FHFI]RefChem:799163203-173-22-(p-tolyl)acetaldehydep-Tolyl-acetaldehyde(4-Methylphenyl)acetaldehyde; 2-(4-Methylphenyl)acetaldehyde; p-Methylphenylacetaldehyde; p-Toluacetaldehyde; p-Tolylacetaldehydep-TOLYLACTALDEHYDE2-(4-methylphenyl)ethanalUNII-7L6760H4LHp-methylphenylacetaldehyd4-methylphenylacetaldehydep-Tolylacetaldehyde, 8CI4-Methylbenzene acetaldehyde(4-methyl-phenyl)-acetaldehyde
External database identifiers
- ChEBI:CHEBI:178623
- EPA DTXSID:DTXSID0051524
- PubMed:18355031
Evidence from additional scientific databases
EMBL-EBI ChEBI
Exact identifier matchCHEBI:178623
(4-Methylphenyl)acetaldehyde
- Formula
- C9H10O
- Average mass
- 134.178 g/mol
- Monoisotopic mass
- 134.07316 Da
- Formal charge
- 0
- phenylacetaldehydes — is a (CHEBI:25973)
- phenylacetaldehydes — is a (CHEBI:25973)
Additional curated names
2-(4-methylphenyl)acetaldehyde
Cross-references from this source
- CAS: 104-09-6 — ChemIDplus
- MANUAL_X_REF: 21159447 — ChemSpider
- MANUAL_X_REF: HMDB0029639 — HMDB
Mapped by: Exact CAS cross-reference in the ChEBI compound record. Retrieved: 2026-08-31. Open source record
NIH PubChem PUG-View
Exact identifier match61006
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 221.00 to 222.00 °C. @ 760.00 mm Hg Source: Human Metabolome Database (HMDB)
- Boiling Point: 210 °C Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Density: 1.010-1.016 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Melting Point: 40 °C Source: Human Metabolome Database (HMDB)
- Physical Description: Solid Source: Human Metabolome Database (HMDB)
- Physical Description: Colourless oily liquid; powerful, refreshing, green-fruity, forest like, sweet floral odour Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Refractive Index: 1.530-1.549 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: 1162 mg/L @ 20 °C (exp) Source: Human Metabolome Database (HMDB)
- Solubility: Insoluble in water; soluble in oils Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: Miscible at room temperature (in ethanol) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H317 (89.3%): May cause an allergic skin reaction [Warning Sensitization, Skin]; H318 (10.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P261, P264+P265, P272, P280, P302+P352, P305+P354+P338, P317, P321, P333+P317, P362+P364, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 356 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| EMBL-EBI ChEBI | Exact match | 2026-08-31 |
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.