Overview
2-Butene-1,4-diol (CAS 110-64-5 ), also known commercially as Agrisynth B2D and 1,4-dihydroxy-2-butene, is a bifunctional allylic diol used as a building block and functional ingredient across personal care and food-related applications.
Its dual hydroxyl groups make it a reactive intermediate for synthesis as well as a direct-use humectant and flavoring component. In personal care formulations, it functions as a humectant to support moisture retention in skin and hair care products.
Food and flavor manufacturers use it as a flavoring agent and acidulant in finished formulations where controlled acidity and taste profile are required. As a synthetic intermediate, it serves in the production of specialty chemicals and polymers.
It is also utilized in fragrance compounds where the reactive double bond is a key point of chemical modification. Cosmetic formulators sourcing for moisturizing systems may evaluate it alongside conventional glycols for compatibility.
This chemical is available as a liquid at standard commercial purities suitable for industrial and specialty chemical use. Food-grade and technical-grade designations are the most commonly encountered specifications in the market.
It is typically supplied in drums or intermediate bulk containers depending on order volume. The material should be handled according to standard safety protocols for industrial diols to ensure product stability and performance.
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Physical Properties
| Melting Point | 7 °C |
| Boiling Point | 141-149 °C @ Press: 20 Torr |
| Density | 1.067-1.074 g/cm³ |
| Flash Point | >230 °F |
| Color | yellow |
| Form | Oil |
| Refractive Index | n 20/D 1.479 |
Safety & Handling
Warning GHS07 Hazard Statements H302 Harmful if swallowed H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation H402 Harmful to aquatic life H412 Harmful to aquatic life with long lasting effects Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29053990 |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 110-64-5
- EC Number
- 203-787-0
- Mol. Weight
- 88.11
- HS Code
- 29053990
- Category
- Alcohols & Glycols