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2-Methyl-1-propanol

Isobutanol Chemical properties Uses Production method Hazards & Safety Information
2-Methyl-1-propanol
2-Methyl-1-propanol structure
CAS No.
78-83-1
Chemical Name:
2-Methyl-1-propanol
Synonyms
IBA;FEMA 2179;i-Butanol;sobutanol;ISOBUTANOL;iso-C4H9OH;BUTANOL-ISO;femanumber2179;ISOBUTANOL(SG);Isobutanol4x1L
CBNumber:
CB3158955
Molecular Formula:
C4H10O
Formula Weight:
74.12
MOL File:
78-83-1.mol

2-Methyl-1-propanol Properties

Melting point:
−108 °C(lit.)
Boiling point:
108 °C(lit.)
Density 
0.803 g/mL at 25 °C(lit.)
vapor density 
2.55 (vs air)
vapor pressure 
8 mm Hg ( 20 °C)
refractive index 
n20/D 1.396(lit.)
FEMA 
2179 | ISOBUTYL ALCOHOL
Flash point:
82 °F
storage temp. 
Flammables area
solubility 
water: miscible70g/L at 20°C
form 
Solid
color 
APHA: ≤10
Relative polarity
0.552
PH
7 (80g/l, H2O, 20℃)
Odor
Slightly suffocating; nonresidual alcoholi
explosive limit
1.5-12%(V)
Water Solubility 
95 g/L (20 ºC)
λmax
λ: 260 nm Amax: 0.10
λ: 280 nm Amax: 0.06
JECFA Number
251
Merck 
14,5131
BRN 
1730878
Exposure limits
TWA 300 mg/m3 (100 ppm) NIOSH, 150 mg/m3 (50 ppm) (ACGIH); IDLH 8000 ppm.
Stability:
Stable. Flammable. Incompatible with strong oxidizing agents, aluminium.
InChIKey
ZXEKIIBDNHEJCQ-UHFFFAOYSA-N
CAS DataBase Reference
78-83-1(CAS DataBase Reference)
NIST Chemistry Reference
1-Propanol, 2-methyl-(78-83-1)
EPA Substance Registry System
1-Propanol, 2-methyl-(78-83-1)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  Xi
Risk Statements  10-37/38-41-67
Safety Statements  13-26-37/39-46-7/9
RIDADR  UN 1212 3/PG 3
WGK Germany  1
RTECS  NP9625000
Autoignition Temperature 801 °F
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29051990
Hazardous Substances Data 78-83-1(Hazardous Substances Data)
Toxicity LD50 orally in rats: 2.46 g/kg (Smyth)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.

NFPA 704

Diamond Hazard Value Description
3
0
Health  
Flammability   3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)
Special  

(NFPA, 2010)

2-Methyl-1-propanol price More Price(42)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 270466 2-Methyl-1-propanol for HPLC, 99.5% 78-83-1 1l $193 2018-11-13 Buy
Sigma-Aldrich 1437053 2-Methyl-1-propanol United States Pharmacopeia (USP) Reference Standard 78-83-1 3x1.2ml $348 2018-11-13 Buy
Alfa Aesar 022908 Isobutanol, HPLC Grade, 99+% 78-83-1 *4x1L $152 2018-11-16 Buy
Alfa Aesar 022908 Isobutanol, HPLC Grade, 99+% 78-83-1 1L $61.5 2018-11-16 Buy
Sigma-Aldrich W217913 Isobutyl alcohol natural, ≥99%, FCC, FG 78-83-1 1kg-k $70 2018-11-13 Buy

2-Methyl-1-propanol Chemical Properties,Uses,Production

Isobutanol

Isobutanol, also known as isopropyl alcohol, 2-methyl propanol is a colorless alcohol flammable liquid. Isobutanol is one of the main ingredients of fresh tea leaves, black tea and green tea to produce the wonderful aroma with the molecular weight of 74.12, boiling point of 107.66 ℃, relative density of 0.8016 (20/4 ℃), refractive index of 1.3959 and a flash point of 37 ℃. Isobutanol is fully dissolved in alcohol and ether, slightly soluble in water. Its vapor can form an explosive mixture with air; the explosion limit is 2.4% (volume). It can form addition compounds (CaCl2 • 3C4H10O) with calcium chloride. Isobutanol can be obtained by the distillation of the by-product of methanol and can also be derived from distillation of crude fusel oil. Using Industrial carbonyl cobalt as a catalyst, making propylene and carbon monoxide and hydrogen mixture react at 110~140 ° C, 2.0265 × 107~3.0397 × 107Pa to generate butyraldehyde and isobutyraldehyde, and then via catalytic hydrogenation, separation can obtain isobutanol. Isobutanol is used in the manufacture of petroleum additives, antioxidants, plasticizers, synthetic rubber, artificial musk, fruit oil and synthetic drugs and also used as solvents and chemical reagents.

Chemical properties

It is a kind of colorless transparent liquid with a special smell, soluble in water, and fully dissolved in ethanol and ether.

Uses

(1)  For analysis reagents, chromatography reagents, solvents and extraction agent.
(2)  As raw materials for the organic synthesis, and also act as a superior solvent.
(3)  Isobutanol is raw materials for organic synthesis. It mainly used in the synthesis of isobutyronitrile, an intermediate for diazinon.
(4)  As raw materials of organic synthesis, isobutanol is used in the manufacture of petroleum additives, antioxidants, 2, 6-butylated hydroxytoluene, isobutyl acetate (paint solvents), plasticizers, synthetic rubber, artificial musk, fruit oil and synthetic drugs. It can also be used to purify strontium, barium and lithium salts and other chemical reagents and used as a superior solvent.
(5)  Extraction solvent. Food flavors listed in GB 2760-96.

Production method

(1) In the presence of sodium amalgam or other catalysts, it is derived from the reduction of butyraldehyde;r it is derived from the distillation of the by-product obtained from the synthesis of methanol.
(2) 1. Carbonyl synthesis (by-product of butanol production from propylene) : using propylene and synthesis gas as raw material, going through  carbonyl synthesis in the system to get  n-butyl and isobutyl  aldehyde, after the catalyst, hydrogenating into alcohol, then undergoing dehydration and separation can obtain the product of   n-butyl and isobutyl  alcohol respectively.
2. Hydrogenation of isobutyraldehyde: isobutyraldehyde via the liquid hydrogenation reaction, obtained isobutanol in the catalytic nickel.
3. Recycle from isobutyl oil, a byproduct of synthetic methanol distillation: isobutanol is obtained by dehydration of methanol, salting out and then azeotropic distillation of isobutyl oil.
(3) The preparation method is using synthesis gas and propylene as raw materials, obtaining isobutyraldehyde during the carbonyl synthesis of 2-ethylhexyl alcohol, and then by hydrogenation to acquire isobutanol.

Hazards & Safety Information

Category: Flammable liquids
Toxic classification: Moderately hazardous
Acute toxicity: Oral-Rat LD50: 2460 mg/kg; Abdominal-Mouse LD50: 1801 mg/kg
Stimulation data: Eye-Rabbit 2 mg Severity
Explosives hazardous characteristics: To be explosive when mix with air.
Flammability hazard characteristics: Flammable in case of fire, high temperature, oxidant; stimulating the smoke when combustion.
Storage and transportation characteristics: Ventilation and low-temperature drying in treasury; oxidants and acids stored separately.
Extinguishing agent: Dry powder, dry sand, carbon dioxide, foam.
Occupational Standard: TWA 50 PPM.

Chemical Properties

colourless oily liquid

Uses

Isobutyl Alcohol is a reagent used in organic reactions. It is used in the synthesis of new fluorinating reagents. It is also used in the lipase-catalyzed production of biodiesel as an energy source.

Uses

manufacture of esters for fruit flavoring essences; solvent in paint, varnish removers.

Uses

Isobutanol is widely used in the productionof isobutyl acetate for lacquers, isobutylphthalate for plasticizers; as a solvent forplastics, textiles, oils, and perfumes; and asa paint remover.

Definition

ChEBI: An alkyl alcohol that is propan-1-ol substituted by a methyl group at position 2.

General Description

A clear colorless liquid with a sweet odor. Flash point 85 - 100°F. Less dense than water. Vapors heavier than air.

Air & Water Reactions

Highly flammable. Soluble in water.

Reactivity Profile

2-Methyl-1-propanol is an alcohol. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. 2-Methyl-1-propanol is incompatible with strong oxidizers.

Hazard

Flammable, moderate fire risk. Strong irritant.

Health Hazard

Inhalation causes eye and throat irritation andheadache. Ingestion may cause depression ofthe central nervous system. It is an irritantto the skin, causing cracking. Target organsare the eyes, skin, and respiratory system.
LD50 value, oral (rabbits): 3750 mg/kg.

Health Hazard

Contact with eyes is extremely irritating and may cause burns. Breathing vapors will be irritating to the nose and throat. In high concentrations, may cause nausea, dizziness, headache, and stupor.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Fire Hazard

Flash Point (°F): 82 ℃, 90 ℃; Flammable Limits in Air (%): 1.6-10.9; Fire Extinguishing Agents: Alcohol foam, dry chemical, or carbon dioxide; Fire Extinguishing Agents Not To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire: Not pertinent; Ignition Temperature (°F): 800; Electrical Hazard: Not pertinent; Burning Rate: 3.5 mm/min.

Chemical Reactivity

Reactivity with Water: No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Potential Exposure

Butyl alcohols are used as solvents for paints, lacquers, varnishes, natural and synthetic resins, gums, vegetable oils, dyes, camphor, and alkaloids. They are also used as an intermediate in the manufacture of pharmaceuticals and chemicals; in the manufacture of artificial leather, safety glass; rubber and plastic cements, shellac, raincoats, photographic films, perfumes; and in plastic fabrication.

First aid

Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy

Shipping

UN1120 Butanols, Hazard Class: 3; Labels: 3— Flammable liquid. UN1212 Isobutanol or Isobutyl alcohol, Hazard Class: 3; Labels: 3—Flammable liquid

Purification Methods

Isobutanol is dried by refluxing with CaO and BaO for several hours, followed by treatment with calcium or aluminium amalgam, then fractional distilling it from sulfanilic or tartaric acids. More exhaustive purifications involve formation of phthalate or borate esters. Heating it with phthalic anhydride gives the acid phthalate which, after crystallisation to constant melting point (m 65o) from pet ether, is hydrolysed with aqueous 15% KOH. The alcohol is distilled off as the water azeotrope and dried (K2CO3, then anhydrous CuSO4), and finally magnesium turnings, followed by fractional distillation. [Hückel & Ackermann J Prakt Chem 136 15 1933.] The borate ester is formed by heating the dried alcohol for 6hours in an autoclave at 160-175o with a quarter of its weight of boric acid. After fractional distillation under vacuum, the ester is hydrolysed by heating for a short time with aqueous alkali and the alcohol is dried with CaO and distilled. [Michael et al. J Am Chem Soc 38 653 1916.] Alternatively dry the alcohol with K2CO3, CaSO4 or CaCl2, filter and fractionally distil it. For further drying, the redistilled alcohol can be refluxed with the appropriate alkyl phthalate or succinate as described under ethanol. [Beilstein 1 IV 1588.]

Incompatibilities

Butyl alcohols may form explosive mixture with air. In all cases they are Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Attacks some plastics, rubber and coatings. n-Butanol is incompatible with strong acids; halogens, caustics, alkali metals; aliphatic amines; isocyanates. sec-Butanol forms an explosive peroxide in air. Ignites with chromium trioxide. Incompatible with strong oxidizers; strong acids; aliphatic amines; isocyanates, organic peroxides. tert-Butanol is incompatible with strong acids (including mineral acid), including mineral acids; strong oxidizers or caustics, aliphatic amines; isocyanates, alkali metals (i.e., lithium, sodium, potassium, rubidium, cesium, francium). isoButanol is incompatible with strong acids; strong oxidizers; caustics, aliphatic amines; isocyanates, alkali metals and alkali earth. May react with aluminum at high temperatur

Waste Disposal

Incineration, or bury absorbed waste in an approved land fill.

2-Methyl-1-propanol Preparation Products And Raw materials

Raw materials

Preparation Products


2-Methyl-1-propanol Suppliers

Global( 261)Suppliers
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View Lastest Price from 2-Methyl-1-propanol manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-17 2-Methyl-1-propanol
78-83-1
US $1.00 / kg 1kg 99% 100KG career henan chemical co

2-Methyl-1-propanol Spectrum


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