MPD
2-Methyl-2,4-pentanediol
CAS: 107-41-5
Molecular Formula: C6H14O2
MPD - Names and Identifiers
| Name | 2-Methyl-2,4-pentanediol |
| Synonyms | HG MPD Isol Pinakon Diolane hexane-1,2-diol Hexylene glycol 2-METHYLPENTAN-2,4-DIOL 2-Methyl-2,4-pentanediol 2-Methylpentane-2,4-diol 2-METHYLPENTANE-2,4-DIOL 2-METHYL-2,4-PENTANEDIOL (4R)-2-methylpentane-2,4-diol (4S)-2-methylpentane-2,4-diol 2,4-Dihydroxy-2-Methyl-Penthane Hexylene Glycol (2-Methyl-2,4-Pentanediol |
| CAS | 107-41-5 |
| EINECS | 203-489-0 |
| InChI | InChI=1/C6H14O2/c1-5(7)4-6(2,3)8/h5,7-8H,4H2,1-3H3 |
| InChIKey | SVTBMSDMJJWYQN-UHFFFAOYSA-N |
MPD - Physico-chemical Properties
| Molecular Formula | C6H14O2 |
| Molar Mass | 118.17 |
| Density | 0.925 g/mL at 25 °C (lit.) |
| Melting Point | -40 °C (lit.) |
| Boling Point | 197 °C (lit.) |
| Flash Point | 201°F |
| Water Solubility | soluble |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Vapor Presure | 0.02 mm Hg ( 20 °C) |
| Vapor Density | 4.1 (vs air) |
| Appearance | Slightly Viscous Liquid |
| Color | Clear |
| Odor | Ammonia-like. |
| Exposure Limit | ACGIH: TWA 25 ppm; STEL 50 ppm(10 mg/m3)NIOSH: Ceiling 25 ppm(125 mg/m3) |
| Maximum wavelength(λmax) | ['λ: 260 nm Amax: 0.01', , 'λ: 280 nm Amax: 0.01'] |
| Merck | 14,4710 |
| BRN | 1098298 |
| pKa | 15.10±0.29(Predicted) |
| PH | 6-8 (25℃, 1M in H2O) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Incompatible with strong oxidizing agents, strong acids, strong reducing agents. |
| Sensitive | Hygroscopic |
| Explosive Limit | 1-9.9%(V) |
| Refractive Index | n20/D 1.427(lit.) |
| Physical and Chemical Properties | Colorless liquid. Melting Point -40 ℃, boiling point 198 ℃,97 ℃(1.33kPa), relative density 0.9216(20/4 ℃), refractive index 1.4276. Flash point 93 °c. Soluble in water, alcohol, ether and lower aliphatic hydrocarbons. Slightly sweet aroma. |
| Use | Used as pesticide stabilizer, diesel oil antifreeze, etc |
MPD - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/38 - Irritating to eyes and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 1 |
| RTECS | SA0810000 |
| FLUKA BRAND F CODES | 3-23 |
| TSCA | Yes |
| HS Code | 29053910 |
| Toxicity | LD50 orally in rats: 4.70 g/kg (Smyth, Carpenter) |
MPD - Reference Information
| LogP | 0 at 20℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| description | 2-Methyl-2,4-pentanediol, abbreviation MPD) is a diol organic matter, with a chiral carbon atom, colorless liquid at room temperature, can be hydrogenated from diacetone alcohol. The appearance of colorless liquid, sweet mild. Miscible with water, miscible in ethanol, soluble in most organic solvents. |
| Properties and stability | 1. Avoid contact with strong acid, strong oxidant, strong reducing agent, acid chloride, acid anhydride. Flammable liquid. Easy moisture absorption, non-corrosive to metals. Similar to ethylene glycol, it is stable to alkali and does not decompose when boiled with sodium hydroxide. In the presence of an acid, a condensation reaction with an aldehyde easily takes place to form a derivative of 1, 3-dioxane. 2. Exist in Burley tobacco leaves, smoke. |
| Application | 2-methyl -2, 4-pentanediol (MPD) is a widely used fine chemical product, can be used in pesticide, biochemical engineering, photosensitive materials, synthetic spices and other fields. 2-methyl -2, 4-pentanediol is a highly soluble organic solvent, which can be used as an additive for the production of rust and oil removal from metal surface treatment agents, and can also be used as textile auxiliaries, can also be used in paint and latex paint, can also be used in cosmetics, used as pesticide stabilizer, can also be used for daily moisturizing agent, flavor raw materials, hydraulic oil, high temperature lubricating oil, brake oil, dry cleaning agent, printing ink, pigment dispersant, wood preservative and so on. Osmotic agent, emulsifier and antifreeze. It is used as solvent, perfume, medical disinfectant, penetration agent for fabric, paper making and leather processing aid. The oral LD50 of rats was 4700mg/kg. used as pesticide stabilizer, anti-freezing agent for diesel engine oil, etc. coupling agent and penetrating agent for fabric. Emulsifiers. Fluid for hydraulic braking. Additives for fuels and lubricants |
| synthesis method | 2-methyl -2, 4-pentanediol its synthesis method mainly has the following two kinds, one is prepared by the decomposition of 2,4,4, 6-tetramethyl-1, 3-dioxane in methanol; the other method is to use acetone condensate diacetone alcohol as raw material for hydrogenation synthesis. The process is simple and the raw material is easy to obtain. |
| production method | diacetone alcohol (see 11360) is obtained by condensation of acetone, followed by liquid phase hydrogenation. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 3700 mg/kg; Oral-mouse LD50: 3097 mg/kg |
| stimulation data | Skin-rabbit 465 mg mild; Eye-rabbit 93 mg severe |
| flammability hazard characteristics | flammability; Combustion stimulus smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| extinguishing agent | dry powder, foam, sand, water |
| Occupational Standard | TWA 125 mg/m3; Tel 190 mg/m3 |
| autoignition temperature | 425°C DIN 51794 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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