Methyl-2 butanol-2
2-Methyl-2-butanol
CAS: 75-85-4
Molecular Formula: C5H12O
Methyl-2 butanol-2 - Names and Identifiers
| Name | 2-Methyl-2-butanol |
| Synonyms | TAA Amylenhydrate C2H5C(CH3)2OH T-amyl alcohol tert-Amyl alcohol 2-methyl-2-butano 2-methylbutanol-2 Methyl-2 butanol-2 3-Methylbutan-3-ol 2-methylbutan-2-ol 2-Methyl-2-butanol tert-Pentyl alcohol 3-Methyl-butanol-(3) 1,1-Dimethyl-1-propanol 2-methyl-2-butanol (tert-amyl alcohol) |
| CAS | 75-85-4 |
| EINECS | 200-908-9 |
| InChI | InChI=1/C5H12O/c1-4-5(2,3)6/h6H,4H2,1-3H3 |
Methyl-2 butanol-2 - Physico-chemical Properties
| Molecular Formula | C5H12O |
| Molar Mass | 88.15 |
| Density | 0.805g/mLat 25°C(lit.) |
| Melting Point | -12 °C |
| Boling Point | 102°C(lit.) |
| Flash Point | 20 °C |
| Water Solubility | 120 g/L (20 ºC) |
| Solubility | Miscible with alcohol, ether, benzene, chloroform, glycerol, oils and acetone. |
| Vapor Presure | 15.5 hPa (20 °C) |
| Vapor Density | 3 (vs air) |
| Appearance | Liquid |
| Color | Clear colorless |
| Merck | 14,7140 |
| BRN | 1361351 |
| pKa | 15.38±0.29(Predicted) |
| PH | 6.0 (118g/l, H2O, 20℃)neutral |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Light sensitive. Highly flammable. Incompatible with strong oxidizing agents. |
| Explosive Limit | 1.3-9.6%(V) |
| Refractive Index | n20/D 1.405(lit.) |
| Physical and Chemical Properties | Colorless flammable liquid, burning with a special camphor-like odor. melting point -11.9 ℃ boiling point 101.8 ℃ relative density 0.809 refractive index 1.4052 flash point 24 ℃ soluble in 8 times of water, miscible with ethanol, ether, benzene, chloroform, glycerol and oils. The aqueous solution is neutral to the Litmus. |
| Use | It is used as a raw material for the synthesis of spices and pesticides, and is also an excellent solvent. |
Methyl-2 butanol-2 - Risk and Safety
| Risk Codes | R11 - Highly Flammable R20 - Harmful by inhalation R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R21 - Harmful in contact with skin |
| Safety Description | S46 - If swallowed, seek medical advice immediately and show this container or label. S39 - Wear eye / face protection. S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 1105 3/PG 2 |
| WGK Germany | 1 |
| RTECS | SC0175000 |
| TSCA | Yes |
| HS Code | 29051500 |
| Hazard Class | 3 |
| Packing Group | II |
| Toxicity | LD50 orally in rats: 1.0 g/kg (Schaffarzick, Brown) |
Methyl-2 butanol-2 - Upstream Downstream Industry
| Raw Materials | Acetone acetylene |
| Downstream Products | Triadimefon |
Methyl-2 butanol-2 - Nature
Open Data Verified Data
a colorless, transparent, volatile liquid with a special odor and scorching odor. The relative density is 0. 8084(20 ℃). Melting Point -11.9 °c. Boiling point 102 °c. Refractive index 1.4058 (20 °c). Flash point 21 ℃. Soluble in water, with ethanol, ether, benzene, chloroform, glycerol and oil and many other organic substances to form azeotropic, and water to form an azeotropic composition of tert-amyl alcohol 72.5%, water 27. 5%, azeotropic point 87. 35.
Last Update：2024-01-02 23:10:35
Methyl-2 butanol-2 - Preparation Method
Open Data Verified Data
acetone-acetylene method.
Last Update：2022-01-01 10:34:24
Methyl-2 butanol-2 - Use
Open Data Verified Data
It is mainly used as a new type of pesticide, artificial high flavor Musk, seed protective agent triadimenol and color film coloring agent of raw materials; Can also be used for genenone, triadimefon and so on.
Last Update：2022-01-01 10:34:23
Methyl-2 butanol-2 - Safety
Open Data Verified Data
moderate toxicity, eye, nose and respiratory organs. Inhalation of its vapor can cause vertigo, Head Pain, Cough, Nausea, tinnitus, delirium, severe cases can cause high iron hemoglobinopathy, diabetes and so on. Rats were given oral LD50. lOOOmg/kg.
16 5kg iron drum packaging. Ventilation, drying, fire prevention, explosion-proof, sealed storage. Should prevent violent impact, avoid sun and rain.
Last Update：2022-01-01 10:34:25
Methyl-2 butanol-2 - Reference Information
| olfactory Threshold | 0.088ppm |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | tert-amyl alcohol system name 2-methyl-2-butanol, colorless transparent liquid, slightly soluble in water, with water can form an azeotropic mixture, the boiling point of 87.4 deg C, and ethanol, ether, benzene, chloroform, glycerol and other miscible. As a chemical raw material, tert-amyl alcohol is widely used in synthetic perfume, medicine and color film industries. In the mid-Seventy's, Japan's research on the synthesis of the intermediate of the tert-amyl alcohol as the raw material was successful, so that a number of high value-added extension products were available, and the deep processing of tert-amyl alcohol was pushed to a new height. |
| Use | used as raw materials for the synthesis of spices and pesticides, and also an excellent solvent mainly used for the production of new pesticides, and can be used for the synthesis of indane Musk, as well as color couplers for color films. Production of tert-amyl alcohol intermediate methyl butynol is also useful pharmaceutical intermediates and terpene perfume intermediates, and used in the manufacture of acid etching inhibitor, viscosity stabilizer, viscosity reducer, and used in the manufacture of nickel plating, copper plating polishing agent, chlorinated hydrocarbon stabilizer, etc. |
| production method | (1) acetone and acetylene are used as raw materials, which are obtained by alkynylation and hydrogenation. Acetylene is dissolved in liquid ammonia, mixed with acetone and catalyst, and then sent to the alkynylation reactor. The reaction solution is flash evaporated to separate unreacted acetylene and ammonia, and the unreacted acetone is distilled off, the obtained methyl butynol enters the hydrogenation reactor for reaction to generate tert-amyl alcohol, and the product is obtained by dehydration and purification. (2) it is formed by adding water to isopentene. (3) obtained by fractional distillation of a mixed alcohol formed by chlorination and hydrolysis of pentane. The raw material pentane was dehydrated with anhydrous hydrogen chloride, evaporated and mixed with chlorine gas into the reactor, and the reaction temperature was 250-300 °c. The reaction product was separated by four distillation columns to obtain chloropentane. In the hydrolyzer, sodium oleate is used as catalyst, and the chloropentane is hydrolyzed with sodium hydroxide aqueous solution. The pentanol containing 59% primary alcohol, 36% secondary alcohol and 5% tertiary alcohol can be obtained by separating and distilling crude pentanol from water. Using acetone and acetylene as raw materials, the purity of the product was 99%. Raw material consumption quota: acetone 1040kg/t, calcium carbide 1500kg/t, hydrogen (99.5%)650, liquid ammonia 135kg/t, potassium carbonate 340kg/t. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 1000 mg/kg; Oral-mouse LDL0:2500 mg/kg |
| explosive hazard characteristics | explosive when mixed with air |
| flammability hazard characteristics | flammable in case of open flame, high temperature and oxidant; combustion-induced smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| Occupational Standard | TWA 360 mg/m3 |
| spontaneous combustion temperature | 819 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:52:54
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Raw Materials for Methyl-2 butanol-2
Downstream Products for Methyl-2 butanol-2