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2-Methyl-1.3-propanediol is a product produced through hydroformylation of allyl alcohol with carbon monoxide and hydrogen, which is then followed by hydrogenation. It is a colorless low viscosity liquid with low toxicity. It is a non-linear diol with a unique methyl branch.
| Name | 2-methyl-1,3-propanediol |
| Synonyms | HSDB 7267 UNII-N8F53B3R4R 2-methyl-3-propanediol 2-METHYL-PROPAN-1,3-DIOL 2-Methyl-1,3-propanediol 2-methylpropane-1,3-diol 3-Propanediol,2-methyl-1 2-METHYL-1,3-PROPANEDIOL 2-methyl-1,3-propanediol 1,3-Propanediol, 2-methyl- 1,3-DIHYDROXY-2-METHYLPROPANE Methyl propane diol (MP Diol) 2-Methyl-1,3-propanediol (MPO) |
| CAS | 2163-42-0 |
| EINECS | 412-350-5 |
| InChI | InChI=1/C4H10O2/c1-4(2-5)3-6/h4-6H,2-3H2,1H3 |
| InChIKey | QWGRWMMWNDWRQN-UHFFFAOYSA-N |
| Molecular Formula | C4H10O2 |
| Molar Mass | 90.12 |
| Density | 1.015 g/mL at 25 °C (lit.) |
| Melting Point | -91 °C (lit.) |
| Boling Point | 123-125 °C/20 mmHg (lit.) |
| Flash Point | >230°F |
| Solubility | Chloroform (Soluble), DMSO (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.0225mmHg at 25°C |
| Vapor Density | 3.2 (vs air) |
| Appearance | Oil |
| Color | Colourless |
| BRN | 1731422 |
| pKa | 14.51±0.10(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | n20/D 1.445(lit.) |
| Risk Codes | 36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. |
| WGK Germany | 1 |
| introduction | methyl propylene glycol, English name is METHYLPROPANEDIOL, alias: 2-methyl -1,3-propylene glycol (MPO);2-methyl pentane -2,4-diol. Methyl propylene glycol is a colorless and transparent liquid with low viscosity. It can be used as a solvent to dissolve other ingredients in cosmetic formulas. Almost no irritation to skin and eyes. |
| Application | Methyl propylene glycol can be used to manufacture unsaturated polyesters, liquid saturated polyesters, thermoplastic polyester resins (modified by PET and PBT), alkyd resins, polyurethane resins, diester plasticizers, lubricants, etc., and also used in cosmetics, medicines, etc. The obtained polymer has the characteristics of low viscosity, low melting point, low temperature resistance and weather resistance. |
| harmfulness | methyl propylene glycol is an organic alcohol used as a solvent in cosmetics. According to research, it can enhance the components that penetrate into the skin. It is mainly used to help other active ingredient products, but not as the active ingredient itself. It is considered a safe ingredient with no side effects or warnings related to use. The cosmetics database assessed its safety level as 99%, and no research showed that it was a toxin or irritant. However, any ingredient that helps skin penetration should be used carefully, because it can increase the possibility of other dangerous chemicals being easily available to the body. |
| Category | Specifications |
|---|---|
| Chemical Name | 2-Methyl-1,3-propanediol |
| CAS No. | 2163-42-0 |
| Molecular Formula | C₄H₁₀O₂ |
| Appearance | Colorless viscous liquid |
| Odor | Mild, characteristic |
| Boiling Point | 214-216°C |
| Flash Point | 121°C (closed cup) |
| Density (20°C) | 1.02 g/cm³ |
| Solubility | Miscible with water, alcohols, and ethers |
| Property | Performance Data |
|---|---|
| Purity | ≥99% (GC) |
| Hydroxyl Value | 1000-1100 mg KOH/g |
| Refractive Index | 1.44-1.45 (20°C) |
| Viscosity (25°C) | 150-200 mPa·s |
| Autoignition Temp | 370°C |
| Industry | Primary Uses |
|---|---|
| Coatings | Polyester resins, alkyds |
| Adhesives | Polyurethane formulations |
| Plasticizers | Non-phthalate alternative |
| Personal Care | Humectant in cosmetics |
| Pharmaceuticals | Solvent and intermediate |
| Parameter | Requirements |
|---|---|
| GHS Classification | H319 (Eye irritation) |
| PPE | Gloves, goggles |
| Storage | Sealed, dry, <30°C |
| Shelf Life | 24 months |
References:
Kirk-Othmer Encyclopedia of Chemical TechnologyOECD 301D (Biodegradability)Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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