1-Undecanol
1-Undecanol (CAS: 112-42-5), with the molecular formula CH3(CH2)10OH and a molecular weight of 172.31 g/mol, is a primary fatty alcohol. It presents as a white solid at room temperature, melting around 11°C. This compound is a valuable intermediate in organic synthesis and finds application in the production of surfactants, plasticizers, and fragrances. Its long alkyl chain also lends itself to use in formulating lubricants and cosmetic ingredients.
- IUPAC
- Alcohol C11,Undecyl alcohol
- Synonyms
- Undecyl alcoholn-UndecanolDecylcarbinol1-Hendecanol

Chemical Synthesis Intermediate
1-Undecanol serves as a versatile building block in organic chemistry. It can be readily converted into various derivatives such as esters, ethers, and halides for further chemical transformations.
Surfactant Production
As a fatty alcohol, 1-Undecanol is a precursor for the synthesis of non-ionic surfactants, which are widely used in detergents, emulsifiers, and wetting agents across various industries.
Fragrance and Flavour Ingredients
The compound can be esterified to produce aroma chemicals, contributing specific notes to fragrances and flavour compositions in the perfumery and food industries.
Lubricant and Cosmetic Formulations
Its hydrophobic long-chain structure makes 1-Undecanol suitable for use as an emollient or viscosity-controlling agent in cosmetic products and as an additive in lubricant formulations.
| Molecular weight | 172.31 |
|---|---|
| Linear formula | CH3(CH2)10OH |
| Assay | 99% |
| Boiling point | 146 °C/30 mmHg(lit.) |
| Density | 0.83 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.44(lit.) |
| Storage temperature | 2-8°C |
| Melting point | 11 °C(lit.) |


Hazard statements
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3082 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi,N |
| Risk statements (R) | 38-43-51/53 |
| Safety statements (S) | 36/37-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 1-Undecanol used for?
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1-Undecanol is used as an intermediate in chemical synthesis, for producing surfactants, fragrance and flavour ingredients, and in lubricant and cosmetic formulations.
What are the CAS number and molecular formula for 1-Undecanol?
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The CAS number for 1-Undecanol is 112-42-5, and its molecular formula is CH3(CH2)10OH.
What grade and purity does Tech Serve Solutions supply for 1-Undecanol?
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Tech Serve Solutions supplies 1-Undecanol with an assay of 99%. This is a technical grade; it is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 1-Undecanol be handled safely?
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Handle 1-Undecanol with appropriate personal protective equipment, including eyeshields and gloves. It is a skin irritant (H315), may cause an allergic skin reaction (H317), and is toxic to aquatic life with long-lasting effects (H411). Ensure good ventilation and avoid release into the environment. Refer to the Safety Data Sheet for full details.
How is 1-Undecanol packed and shipped?
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1-Undecanol is typically packed in appropriate containers for safe transport and is exported globally by Tech Serve Solutions.
How can I request a sample or quote for 1-Undecanol?
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To request a sample or a quote for 1-Undecanol, please contact the Tech Serve Solutions sales team through our website or by phone.
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