Molekula
Ethyl butylacetylaminopropionate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ethyl butylacetylaminopropionate (BAAPE, also known as IR3535) is a synthetic insect repellent active ingredient used in topical repellent formulations such as lotions, sprays and wipes to protect against mosquitoes, ticks and other biting insects. It is a clear to slightly yellow liquid with a molecular weight of 215.29 g/mol, a molecular formula of C11H21NO3, and a CAS number of 52304-36-6. It should be stored at ambient temperatures and is classified with a warning signal word. Molekula supplies Ethyl butylacetylaminopropionate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to light yellow oily liquid |
| Refractive Index | 1.4520 - 1.4550 |
| Water | ≤0.20% |
| Assay | ≥98.0% |
| Identification (IR) | Conforms to reference |
| Acid Value (mg KOH/g) | ≤0.10% |
| Alcohol-insoluble solid | ≤0.20% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless to slightly yellowish liquid |
| Odour | Almost odorless |
| Water Solubility | 70 g/L at 20 °C |
| Solubility (other solvents) | Soluble in n-heptane, dichloromethane, ethyl acetate, p-xylene, acetone, methanol |
| Vapour Pressure | 0.15 Pa /1.1 × 10⁻³ mmHg/ at 20 °C |
| Refractive Index | 1.452 |
| log P (octanol/water) | 1.7 |
Source: PubChem CID 104150 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90037913 |
| CAS Number | 52304-36-6 |
| IUPAC Name | ethyl 3-[acetyl(butyl)amino]propanoate |
| EC Number | 257-835-0 |
| Molecular Formula | C11H21NO3 |
| Molecular Weight | 215.29 |
| Exact Mass | 215.1521 |
| SMILES | CCCCN(CCC(=O)OCC)C(=O)C |
| InChIKey | VZRKEAFHFMSHCD-UHFFFAOYSA-N |
| InChI | InChI=1S/C11H21NO3/c1-4-6-8-12(10(3)13)9-7-11(14)15-5-2/h4-9H2,1-3H3 |
| PubChem CID | 104150 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2924.19.90.50 |
| Tariff Code | 3822190090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 3-[N-n-Butyl-N-acetyl]aminopropionic acid-ethyl ester
- AI 3-70763
- BAAPE
- beta-alanine, N-acetyl-N-butyl-, ethyl ester
- ethyl 3-(N-butylacetamido)propanoate
- Ethyl 3-(N-butylacetamido)propionate
- ethyl 3-[acetyl(butyl)amino]propanoate
- Ethyl N-acetyl-N-butyl-beta-alaninate
- EUS 26-15
- Quwenzhi
Frequently asked questions
What is Ethyl butylacetylaminopropionate used for?
It is primarily used as an insect repellent active ingredient (IR3535) in topical repellent products such as lotions, sprays and wipes, providing protection against mosquitoes, ticks and other biting insects.
What is the chemical formula and molecular weight?
The formula is C11H21NO3 with a molecular weight of 215.29 g/mol.
How should Ethyl butylacetylaminopropionate be stored?
It should be stored at ambient temperature, away from moisture and direct sunlight.
What grade is available?
Available in technical grade; custom grades may be available upon request.
Can Molekula supply it in bulk?
Yes, Molekula can supply Ethyl butylacetylaminopropionate in bulk quantities; please contact sales for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.