Diacetone Alcohol CAS 123-42-2

Products name : Diacetone Alcohol CAS NO. : 123-42-2 Molecular Formula: C6H12O2 Structural formula: Use: Pharmaceutical intermediates, paint solvents Rules: ≥99% 123-42-2 ...

Category:Coating Additives

Introduction

Products name : Diacetone Alcohol
CAS NO. : 123-42-2
Molecular Formula: C6H12O2
Structural formula:
Use: Pharmaceutical intermediates, paint solvents
Rules: ≥99%

123-42-2 – Names and Identifiers

Name 4-Hydroxy-4-methyl-2-pentanone
Synonyms Tyranton
Diacetone
Diketone Alcohol
Diacetone alcohol
Diaectone alcohol
TIMTEC-BB SBB009084
(CH3)2C(OH)CH2C(O)CH3
Acetonyldimethylcarbinol
2-methyl-2-pentanol-4-one
2-Methylpentan-2-ol-4-one
2-Methyl-3-pentanol-4-one
4-hydroxy-4-methylpentan-2-one
4-Hydroxy-4-methyl-2-pentanone
4-Methyl-4-Hydroxy-2-pentanone
2-Hydroxy-2-methyl-4-pentanone
2-Pentanone, 4-hydroxy-4-methyl-
4-Hydroxy-2-keto-4-methylpentane
Diacetone Alcohol 〔4-Hydroxy-4-methyl-2-pentanone〕
CAS 123-42-2
EINECS 204-626-7
InChI InChI:1S/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3

123-42-2 – Physico-chemical Properties

Molecular Formula C6H12O2
Molar Mass 116.16
Density 0.938 g/mL at 20 °C
Melting Point -42.8 °C
Boling Point 166°C(lit.)
Flash Point 132°F
Water Solubility MISCIBLE
Solubility Soluble in alcohol, ether (Weast, 1986), and many other solvents, particular ketones such asacetone and 2-butanone.
Vapor Presure <1 mm Hg ( 20 °C)
Vapor Density 4 (vs air)
Appearance Liquid
Color Clear colorless
Odor Mild, pleasant.
Exposure Limit TLV-TWA 240 mg/m3 (50 ppm) (ACGIH);IDLH 2100 ppm (NIOSH).
Maximum wavelength(λmax) [‘249nm(lit.)’]
Merck 14,2964
BRN 1740440
pKa 14.57±0.29(Predicted)
Storage Condition Store below +30°C.
Stability Stable. Flammable. Incompatible with strong oxidizing agents, amines, ammonia, strong acids, strong bases, alkalies, aluminium.
Explosive Limit 1.8-6.9%(V)
Refractive Index n20/D 1.423(lit.)
Physical and Chemical Properties Colorless flammable liquid with pleasant odor.
melting point -44 ℃
boiling point 164 ℃
relative density 0.9387
refractive index 1.4213
flash point 12.7 ℃
, halogenated hydrocarbons, ethers and water miscible.
Use Used as high boiling point solvent, paint thinner, Wood colorant, rust remover and dye raw materials

123-42-2 – Risk and Safety

Hazard Symbols Xi – Irritant
Risk Codes R36 – Irritating to the eyes
Safety Description S24/25 – Avoid contact with skin and eyes.
UN IDs UN 1148 3/PG 3
WGK Germany 1
RTECS SA9100000
FLUKA BRAND F CODES 9
TSCA Yes
HS Code 2914 40 10
Hazard Class 3
Packing Group III
Toxicity LD50 orally in rats: 4.0 g/kg (Smyth)

123-42-2 – Upstream Downstream Industry

Raw Materials Phthalic anhydride
Acetone
Downstream Products Mesityl oxide, mixture of alpha- and beta-isomers

123-42-2 – Nature

white or yellowish transparent liquid with aromatic flavor. Relative density 0. 9387 (20 ℃). Melting Point -44 °c. Boiling point 167.9 °c. Refractive index 1.4232. Flash point 13 °c. Soluble in water, ethanol, ether and chloroform, unstable, and alkali or in atmospheric distillation when the decomposition. Long-term storage at room temperature is easy to polymerize.

123-42-2 – Preparation Method

acetone is obtained by condensation under the action of a basic catalyst.

123-42-2 – Use

It is used as an intermediate in the manufacture of isopropylidene acetone, methyl isobutyl ketone, methyl isobutyl methanol and hexanediol, chlorone, isophorone from acetone; It is also widely used as a paint brightener, an amino lacquer, a diluent for Nitro paint, and acetyl cellulose, epoxy resin and other solvents.

123-42-2 – Safety

This product stimulates eyes, skin and respiratory mucosa. Enters the body through the respiratory and digestive tracts, affects the nervous system, damages the liver and stomach. Inhalation of high concentrations of vapor will form pulmonary edema, even Coma. Long-term exposure can lead to dermatitis.
External use of iron drum or glass bottle is lined with a wooden box for packing. Store in a cool and ventilated silo, away from heat source and fire, avoid direct sunlight; Store and transport with oxidant and acid Isolation.

123-42-2 – Reference Information

Concentration 0.1 mCi/ml
Specific Activity 25-50 mCi/mmol
Solvent Ethanol
LogP -0.09 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)
Use diacetone alcohol is one of the important derivatives of acetone, used in the preparation of metal detergents, wood preservatives, hydraulic oil solvents; diacetone alcohol can be used for the preparation of methyl isobutyl ketone, methyl isobutyl methanol, hexenediol, phenyl oxygen, isophorone and other intermediates; Diacetone alcohol can be used as paint, celluloid, nitrocellulose, fat, oil, wax, dyes and resin solvents; Diacetone alcohol can be used as photographic film preservatives, antifreeze, extractants, pharmaceutical intermediates, special comonomers, organic synthesis of raw materials.
diacetone alcohol is an intermediate in the process of preparing isopropylidene acetone, methyl isobutyl ketone, methyl isobutyl methanol, hexylene glycol, chlorone and isophorone from acetone. Diacetone alcohol can be used to prepare metal detergents, wood preservatives, photographic film and drug preservatives, antifreeze, hydraulic oil solvents, extractants and fiber finishing agents. Diacetone alcohol is widely used as a solvent for electrostatic paint, celluloid, nitrocellulose, fats, oils, waxes and resins.
used as raw materials of high boiling point solvent, paint thinner, Wood colorant, rust remover and dye, etc.
used as raw materials of dye and resin solution
cellulose acetate and esterified cellulose, A solvent for celluloid and the like. Biochemical studies. Electrophoretic analysis. Wood preservatives.
preparation 1) preparation of catalyst
metal aluminum plate (thickness 0.1, purity 99.0%) in order to remove the natural oxide layer on the surface of metal aluminum, the natural oxide layer was immersed in 20% NaOH solution for 3min, and then immersed in 30% HNO3 solution for 1min. After the treatment, the aluminum plate was used as the anode, the lead plate was used as the cathode, the mass fraction of oxalic acid was 4% as the electrolyte, the current density was 1.5A/dm2, the temperature was 20, after anodizing for Al2O3-Al H, the first carrier was made into the form of a Rasch ring filler with a diameter of about 3mm, and water-sealed in a water bath at 80 ° C. For H, the carrier was prepared by calcination at 350 °c for 1H. The catalyst carrier is immersed in a certain concentration of Mg(NO3)2 solution, stirred at a certain temperature for a certain time, drying in an oven at 125 C for more than 8H. The MgO/Al2O3-Al solid base catalyst was prepared by calcining at a certain temperature for a certain time. 2) acetone condensation reaction
The condensation reaction was carried out in a 250ml three-necked flask, the reaction temperature was controlled with a contact thermometer, and heated and stirred with a SZCL type digital display temperature control magnetic stirrer. The catalytic reaction was carried out under boiling condition, adding GC-14C ml of raw material acetone, 2g of catalyst, without adding water-carrying agent, and the reaction time was 1H. The product was analyzed by gas chromatograph, The activity of the catalyst was expressed in terms of acetone conversion. The results showed that the optimum preparation conditions were as follows: impregnation concentration 2.0%, impregnation temperature 55 ℃, impregnation time 2.0h, calcination temperature 550 ℃ and calcination Time 4.0h. Under these conditions, the conversion of acetone was 21.08% and the selectivity of diacetone alcohol was 100%.
production method is obtained by condensation of acetone under alkaline conditions. 1250kg of acetone was consumed per ton of product.
category flammable liquid
toxicity grade poisoning
Acute toxicity oral-rat LD50: 4000 mg/kg; Oral-mouse LD50: 3950 mg/kg
stimulation data Skin-rabbit 500 mg mild; Eye-rabbit 20 mg severe
explosive hazard characteristics explosive when mixed with air
flammability hazard characteristics flammable in open flame, high temperature, strong oxidant; combustion emissions
storage and transportation characteristics The package is complete, light and light unloading; The warehouse is ventilated, away from open flame, high temperature, separate from oxidant
fire extinguishing agent foam, dry powder, carbon dioxide, sand
Occupational Standard TLV-TWA 50 PPM (240 mg/m3); Tel 75 PPM (360 mg/m3)
spontaneous combustion temperature 640°C
toxic substance data information provided by: pubchem.ncbi.nlm.nih.gov (external link)
immediate life-and health-threatening concentrations 1,800 ppm [10% LEL]

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