Diethyl ether
An ether in which the oxygen atom is linked to two ethyl groups. — ChEBI
Safety documents & references
2 indexed referencesFind a product-specific SDS
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Identity & molecular properties
Source-linked values| CAS number | 60-29-7 | ChEBI ↗ |
| Molecular formula | C4H10O | ChEBI ↗ |
| Molar mass | 74.123 g/mol | ChEBI ↗ |
| Monoisotopic mass | 74.07316 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:35702 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 74.12 g/mol | PubChem ↗ |
| Exact mass | 74.073164938 Da | PubChem ↗ |
| Computed XLogP | 0.9 | PubChem ↗ |
| Topological polar surface area (Ų) | 9.2 | PubChem ↗ |
| H-bond donors | 0 | PubChem ↗ |
| H-bond acceptors | 1 | PubChem ↗ |
| Rotatable bonds | 2 | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifierdiethyl ether1,1'-oxydiethaneRTZKZFJDLAIYFH-UHFFFAOYSA-NCCOCCInChI=1S/C4H10O/c1-3-5-4-2/h3-4H2,1-2H3Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Safety classification · Japan
NITE / Japanese governmentDiethyl ether · H29-B-121
| Endpoint | Reported classification |
|---|---|
| Flammable liquids | Category 1 |
| Acute toxicity （Oral） | Category 4 |
| Serious eye damage/eye irritation | Category 2B |
| Reproductive toxicity | Category 2 |
| Specific target organ toxicity - Single exposure | Category 3 (respiratory tract irritation, narcotic effects) |
| Specific target organ toxicity - Repeated exposure | Category 1 (central nervous system) |
Selected source-reported endpoints. Other endpoints, rationales and conditions remain in the original classification. Missing or unlisted information does not mean non-hazardous. This is not a global classification or transport decision.
Read the original NITE classificationMass ↔ amount of substance
Calculated from sourced massUses 74.123 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCOHCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.