Acetaldehyde
Acetaldehyde (CAS 75-07-0), also known as ethanal, is a volatile organic compound with the chemical formula CH3CHO and a molecular weight of 44.05 g/mol. This highly reactive aldehyde is a critical building block in organic synthesis and is employed in the production of various chemicals, including acetic acid, resins, and perfumes. Its distinct pungent odour signifies its presence in various industrial processes and natural occurrences.
- IUPAC
- Ethanal
- Synonyms
- EthanalEthyl aldehydeAcetyl aldehydeAcetic aldehydeChloroacetaldehyde dimethyl acetalethylaldehydeAldehyde C2

Chemical Synthesis Intermediate
Acetaldehyde serves as a fundamental intermediate in the synthesis of a wide range of organic compounds. It is a key precursor in the large-scale production of acetic acid, pyridine derivatives, and pentaerythritol.
Resin Production
The compound is utilised in the manufacturing of various resins, including acetaldehyde-ammonia resins and urea-formaldehyde resins. These resins find applications in adhesives, coatings, and moulding compounds.
Fragrance and Flavour Industry
Acetaldehyde is used in the formulation of certain fragrances and flavourings due to its characteristic aroma. It contributes to the scent profiles of some perfumes and the taste notes in specific food products, albeit in controlled concentrations.
Solvent Applications
In specific industrial contexts, acetaldehyde can function as a solvent. Its ability to dissolve various organic materials makes it useful in certain extraction and purification processes.
| Molecular weight | 44.05 |
|---|---|
| Linear formula | CH3CHO |
| Assay | ≥99.5% |
| Grade | puriss. p.a. |
| Boiling point | 21 °C(lit.) |
| Density | 0.785 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.332(lit.) |
| Melting point | −125 °C(lit.) |
| Concentration | 1000 μg/mL in H2O |
| Vapour pressure | 14.63 psi (20 °C) |
| Vapour density | 1.52 (vs air) |
| Autoignition temp | 365 °F |
| Storage temperature | 2-8°C |
| Impurities tested | ≤0.008 meq/g Titr. acid |



Hazard statements
- H224Extremely flammable liquid and vapour
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H351Suspected of causing cancer
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P281Use personal protective equipment as required
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | -40 °C / -40 °F |
| Transport (UN / ADR) | UN 1089 3 / PGI |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F+,Xn |
| Risk statements (R) | 12-36/37-40 |
| Safety statements (S) | 16-33-36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Quality | anhydrous |
|---|---|
| Expl Lim | 60 % |
| Evapn Residue | ≤0.005% |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Acetaldehyde used for?
+
Acetaldehyde is a vital intermediate in organic synthesis, used in the production of acetic acid, resins, perfumes, and as a solvent in certain applications.
What is the CAS number and chemical formula for Acetaldehyde?
+
The CAS number for Acetaldehyde is 75-07-0, and its chemical formula is CH3CHO.
What grade and purity does Tech Serve Solutions supply for Acetaldehyde?
+
Tech Serve Solutions supplies Acetaldehyde with an assay of ≥99.5% and a grade of puriss. p.a. anhydrous. This product is intended for laboratory and industrial use and is not represented as USP, BP, EP, or other pharmacopoeial grades.
How should Acetaldehyde be handled safely?
+
Acetaldehyde is an extremely flammable liquid and vapour (H224). It can cause serious eye irritation (H319) and may cause respiratory irritation (H335). It is also suspected of causing cancer (H351). Handle in a well-ventilated area, away from ignition sources, using appropriate personal protective equipment including eyeshields, gloves, and a full-face respirator with a suitable cartridge.
How is Acetaldehyde packed, shipped, and exported by TSS?
+
Acetaldehyde is carefully packed according to international regulations for hazardous materials, ensuring safe shipping and export. Please contact our logistics department for specific details regarding your region.
How can I request a sample or a quote for Acetaldehyde?
+
To request a sample or a quote for Acetaldehyde, please use the 'Request Quote' button on our product page or contact our sales team directly with your requirements.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis