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Characteristics and history of discovery Preparation of water saturated 1-butanol solution Content Analysis Toxicity Uses Production method
1-Butanol structure
Chemical Name:
NBA;BuOH;ccs203;n-BuOH;CCS 203;NA 1120;Butanolo;butanols;Hemostyp;n-C4H9OH
Molecular Formula:
Formula Weight:
MOL File:

1-Butanol Properties

Melting point:
-89 °C
Boiling point:
117.6 °C
0.81 g/mL at 25 °C(lit.)
vapor density 
2.55 (vs air)
vapor pressure 
6.7 hPa (20 °C)
refractive index 
n20/D 1.399(lit.)
Flash point:
95 °F
storage temp. 
Store at RT.
water: soluble
APHA: ≤10
Relative polarity
7 (70g/l, H2O, 20℃)
Alcohol-like; pungent; strong; characteristic; mildly alcoholic, non residual.
explosive limit
Water Solubility 
80 g/L (20 ºC)
Moisture Sensitive
λ: 215 nm Amax: 1.00
λ: 220 nm Amax: 0.50
λ: 240 nm Amax: 0.10
λ: 260 nm Amax: 0.04
λ: 280-400 nm Amax: 0.01
JECFA Number
Exposure limits
TLV-TWA 300 mg/m3 (100 ppm) (NIOSH), 150 mg/m3 (50 ppm) (ACGIH); IDLH 8000 ppm (NIOSH).
Stable. Incompatible with strong acids, strong oxidizing agents, aluminium, acid chlorides, acid anhydrides, copper, copper alloys. Flammable.
CAS DataBase Reference
71-36-3(CAS DataBase Reference)
NIST Chemistry Reference
EPA Substance Registry System
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  Xn,T,F
Risk Statements  10-22-37/38-41-67-39/23/24/25-23/24/25-11
Safety Statements  13-26-37/39-46-7/9-45-36/37-16-7
RIDADR  UN 1120 3/PG 3
WGK Germany  1
RTECS  EO1400000
Autoignition Temperature 649 °F
HS Code  2905 13 00
HazardClass  3
PackingGroup  III
Hazardous Substances Data 71-36-3(Hazardous Substances Data)
Toxicity LD50 orally in rats: 4.36 g/kg (Smyth)
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
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
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
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P314 Get medical advice/attention if you feel unwell.
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+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
2 0
Health   2 Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine)
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)

(NFPA, 2010)

1-Butanol price More Price(66)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1081807 1-Butanol Pharmaceutical Secondary Standard; Certified Reference Material 71-36-3 3x1.2ml $62.3 2018-11-13 Buy
Sigma-Aldrich 19422 1-Butanol analytical standard 71-36-3 5ml $69 2018-11-20 Buy
TCI Chemical B0228 1-Butanol [for Spectrophotometry] >99.0%(GC) 71-36-3 100mL $38 2018-11-22 Buy
TCI Chemical B0704 1-Butanol >99.0%(GC) 71-36-3 25mL $14 2018-11-22 Buy
Alfa Aesar 022925 1-Butanol, HPLC Grade, 99% 71-36-3 1L $42.6 2018-11-16 Buy

1-Butanol Chemical Properties,Uses,Production

Characteristics and history of discovery

1-Butanol is a type of alcohol with four carbon atoms being contained per molecule. Its molecular formula is CH3CH2CH2CH2OH with three isomers, namely iso-butanol, sec-butanol and tert-butanol. It is colorless liquid with alcohol odor.
It has the boiling point of being 117.7 ℃, the density (20 ℃) being ​​0.8109g/cm3, the freezing point being-89.0 ℃, flash point being 36~38 ℃, self-ignition point being 689F and the refractive index being (n20D) 1.3993. At 20 ℃, its solubility in water is 7.7% (by weight) while the water solubility in 1-butanol was 20.1% (by weight). It is miscible with ethanol, ether and other kinds of organic solvents. It can be used as the solvents of a variety of paints and the raw material for producing the plasticizers, dibutyl phthalate. It can also be used for the manufacture of butyl acrylate, butyl acetate, and ethylene glycol butyl ether and also used as the extract of intermediates of organic synthesis and biochemical drugs and can also used in the manufacture of surfactants. Its steam can form explosive mixtures with air with the explosion limit being 3.7%~10.2% (volume fraction).
1-butanol was first discovered by C-A. Wurtz (French) from the fusel oil obtained from the fermentation process of alcohol in 1852. In 1913, the British Strange-Graham Companies have used corn as raw material for production of acetone through the fermentation process with butanol being the main byproduct. Later, due to the increasing demand for butanol, the fermentation production factory began to mainly synthesize n-butanol with acetone and ethanol being the major byproduct. During the Second World War, the German chemical company (Ruhr) began to apply propylene carboxyl method for the production of 1-butanol. With the rise of the oil industry in 1950s, the 1-butanol synthesis method had gotten rapid development with the propylene carboxyl method having the fastest speed.

Preparation of water saturated 1-butanol solution

Add 21 mL of water and 100 mL of 1-butanol to separating funnel of 150 mL, shake for 3 min, stand for layering; and then remove the lower layer with the upper layer being water-saturated 1-butanol solution. (The density of water: 1 g/ml; 1-butanol density: 0.808~0.811 g/ml).

Content Analysis

For the determination of 1-butanol and volatile impurities according to the general gas chromatography (GT-10), use the following conditions:
Column steel column, length: 1.8m; inner diameter: 6.4mm, the packing material should be 10% polyethylene glycol 400M (PEG 400M) with the carrier being 60/80 mesh diatomaceous soil carrier.
Carrier gas: Helium with a flow rate of 45ml/min. Detector: Flame ionization type.
Injector temperature 150 ℃, column temperature 90 0 ℃ detector 150 ℃.
The above information is edited by the Chemicalbook of Dai Xiongfeng.


ADI value is not specified (FAO/WHO, 1994).
LD50: 790 mg/kg (rat, oral).


It can be used as chromatography analysis reagents and also applied to organic synthesis, etc.
Butanol is the allowable food flavors documented in the "food additives health standards" of China. It is mainly used for the preparation of food flavors of bananas, butter, cheese and whiskey. For the candy, the usage amount should be 34mg/kg; for baked foods, it should be 32mg/kg; for soft drinks, it should be 12mg/kg; for cold drinks, it should be 7.0mg/kg; for the cream, it should be 4.0mg/kg; for alcohol, it should be 1.0mg/kg.
Butanol can be used as the intermediates of herbicide 2,4-D butyl ester, butachlor, fluazifop and fluazifop P butyl.
GB 2760-96 provides it be the food flavor allowed by using it. It can be mainly used for the preparation of bananas, butter, cheese, whiskey and other flavor. It can also be used as extraction-purpose solvent and pigment diluent.
It is mainly used for the manufacture of the n-butyl plasticizers of phthalic acid, aliphatic dicarboxylic acid and phosphoric acid that are widely applied to various kinds of plastic and rubber products. It can also be used as the raw material of producing butyraldehyde, butyric acid, butyl-amine and butyl lactate in the field of organic synthesis. It can also be used as the extraction agent of oil, drugs (such as antibiotics, hormones and vitamins) and spices as well as the alkyd paint additives. It can be used as the solvent of organic dyes and printing ink and de-waxing agent.
It can be used for the production of the plasticizers of butyl acetate, dibutyl phthalate and phosphate and can also be used in the production of melamine resin, crylic acid, and epoxy varnish, etc.

Production method

There are several methods for their preparation.
In the past, the production of butanol has also used potatoes, grain or sugar as raw material and through their hydrolysis fermentation. The resulting product from the fermentation broth contains a butanol content of 54.8%~58.5%, acetone content of 30.9%~33.7%, and the ethanol content of 7.8%-14.2%. With the development of petrochemical industry, fermentation method has been gradually phased out. The reaction equation is as follows: (C6H10O5) n [n (H2O)] → [strain] n-C6H12O6 [fermentation] → CH3COCH3 + C4H9OH + C2H5OH
The resulted fermentation broth was further fractionated to obtain acetone, ethanol and n-butanol separately.
Acetaldehyde method
Take acetaldehyde as raw material, add dilute alkali solution to give 2-hydroxybutyraldehyde at temperature below 20 ℃ with the reaction being stopped upon reaching 50%. Use alkali to neutralize the acid and recycle the unreacted acetaldehyde and extract the 2-hydroxybutyraldehyde. Then use acidic catalyst such as sulfuric acid and acetic acid for dehydration to obtain crotonaldehyde at 105~137 ℃, then use copper complex catalyst for hydrogenation at 160~240 ℃ to obtain the crude butyraldehyde and 1-butanol with distillation to obtain the products. CH3CH = CHCHO + H2 [catalyst] CH3CH2CH2CHO + CH3CH2CH2CH2OH
Its synthesis method including the following several ways:
Fermentation and Propylene carbonyl synthesis
Put propylene, carbon monoxide and hydrogen to the catalytic bed for reaction with catalyst being zeolite for absorbing cobalt salt or fatty acid cobalt with the reaction temperature being 130~160 ℃ and the reaction pressure being 20~25MPa. The reaction can generate n-butyraldehyde and iso-butyraldehyde with separation via distillation and further catalytic hydrogenation of the n-butyraldehyde to obtain the 1-butanol. CH3CH2CH2CHO + H2 → CH3CH2CH2CH2OH
You can alternatively use low pressure method with first-step method of propylene, carbon monoxide and water for synthesizing the butanol with the reaction temperature being 100~104 ℃ and pressure being 1.5MPa. It applies the mixture of iron pentacarbonyl, n-butyl pyrrolidine and water. However, the one-way conversion of the propylene is low with only 8% to 10%. Reaction equation: CH3CH = CH2 + 3CO + 2H2O → n-C4H9OH + 2CO2


n-Butyl alcohol is a colourless flammable liquid with strong alcoholic odour. n-Butyl alcohol is a highly refractive liquid and burns with a strongly luminous flame. It is incompatible with strong acids, strong oxidising agents, aluminium, acid chlorides, acid anhydrides, copper, and copper alloys. n-Butyl alcohol has an extensive use in a large number of industries. For instance, it is used as solvent in industries associated with the manufacturing of paints, varnishes, synthetic resins, gums, pharmaceuticals, vegetable oils, dyes, and alkaloids. n-Butyl alcohol finds its use in the manufacture of artificial leather, rubber, plastic cements, shellac, raincoats, perfumes, and photographic films.

Chemical Properties

n-Butyl alcohol is a colorless flammable liquid with a strong alcoholic odor. n-Butyl alcohol is a highly refractive liquid and burns with a strongly luminous flame. It is incompatible with strong acids, strong oxidizing agents, aluminium, acid chlorides, acid anhydrides, copper, and copper alloys. n-Butyl alcohol has extensive use in a large number of industries. For instance, it is used as a solvent in industries associated with the manufacturing of paints, varnishes, synthetic resins, gums, pharmaceuticals, veg etable oils, dyes, and alkaloids. n-Butyl alcohol is used in the manufacture of artifi cial leather, rubber, and plastic cements, shellac, raincoats, perfumes, and photographic fi lms.

Chemical Properties

Colorless liquid; vinous odor. Soluble in water 7.7 wt% (20C). Solution of water in n-butanol 20.1%. Miscible with alcohol and ether.


Suitable for HPLC, spectrophotometry, environmental testing


As solvent for fats, waxes, resins, shellac, varnish, gums etc.; manufacture of lacquers, rayon, detergents, other butyl Compounds; in microscopy for preparing paraffin imbedding materials.


1-Butanol is used in the production of butylacetate, butyl glycol ether, and plasticizerssuch as dibutyl phthalate; as a solvent in thecoating industry; as a solvent for extractionsof oils, drugs, and cosmetic nail products;and as an ingredient for perfumes and flavor.
1-Butanol occurs in fusel oil and as aby-product of the fermentation of alcoholicbeverages such as beer or wine. It is presentin beef fat, chicken broth, and nonfilteredcigarette smoke (Sherman 1979).


Two alcohols that are derived from butane: the primary alcohol butan-1-ol (CH3(CH2)2CH2OH) and the secondary alcohol butan-2-ol (CH3CH(OH)CH2CH3). Both are colorless volatile liquids used as solvents.


ChEBI: A primary alcohol that is butane in which a hydrogen of one of the methyl groups is substituted by a hydroxy group. It it produced in small amounts in humans by the gut microbes.

General Description

Colorless liquid. Used in organic chemical synthesis, plasticizers, detergents, etc.

Air & Water Reactions

Highly flammable. Soluble in water.

Reactivity Profile

1-Butanol attacks plastics. [Handling Chemicals Safely 1980. p. 236]. Mixtures with concentrated sulfuric acid and strong hydrogen peroxide can cause explosions. May form explosive butyl hypochlorite by reacting with hypochlorous acid. May form butyl explosive butyl hypochlorite with chlorine.


Toxic on prolonged inhalation, irritant to eyes. Toxic when absorbed by skin. Flammable, moderate fire risk. Eye and upper respiratory tract irritant.

Health Hazard

The toxicity of 1-butanol is lower than thatof its carbon analog. Target organs are theskin, eyes, and respiratory system. Inhalationcauses irritation of the eyes, nose, and throat.It was found to cause severe injury to rabbits’eyes and to penetrate the cornea uponinstillation into the eyes. Chronic exposureof humans to high concentrations may causephotophobia, blurred vision, and lacrimation.
A concentration of 8000 ppm was maternallytoxic to rats, causing reduced weightgain and feed intake. Teratogenicity wasobserved at this concentration with a slightincrease in skeletal malformations (Nelsonet al. 1989).
In a single acute oral dose, the LD50 value(rats) is 790 mg/kg; in a dermal dose theLD50 value (rabbits) is 4200 mg/kg.
n-Butanol is oxidized in vivo enzymaticallyas well as nonenzymatically and iseliminated rapidly from the body in the urineand in expired air. It inhibits the metabolismof ethanol caused by the enzyme alcoholdehydrogenase.
Based on the available data, the useof n-butanol as an ingredient is consideredsafe under the present practices andconcentrations in cosmetic nail products(Cosmetic, Toiletry and Fragrance Association1987a).

Health Hazard

Anesthesia, nausea, headache, dizziness, irritation of respiratory passages. Mildly irritating to the skin and eyes.

Health Hazard

Exposures to n-butyl alcohol by inhalation, ingestion, and/or skin absorption are harm ful. n-Butyl alcohol is an irritant, with a narcotic effect and a CNS depressant. Butyl alcohols have been reported to cause poisoning with symptoms that include, but are not limited to, irritation to the eyes, nose, throat, and the respiratory system. Prolonged exposure results in symptoms of headache, vertigo, drowsiness, corneal infl amma tion, blurred vision, photophobia, and cracked skin. It is advised that workers com ing in contact with n-butyl alcohol should use protective clothing and barrier creams. Occupational workers with pre-existing skin disorders or eye problems, or impaired liver, kidney or respiratory function may be more susceptible to the effects of the substance.

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): 84 ℃, 97 ℃; Flammable Limits in Air (%): 1.4- 11.2; Fire Extinguishing Agents: Carbon dioxide, dry chemicals; Fire Extinguishing Agents Not To Be Used: Not pertinent; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire: Not pertinent; Ignition Temperature (°F): 650; Electrical Hazard: Class I, Group D; Burning Rate: 3.2 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.

Safety Profile

: A poison by intravenous route. Moderately toxic by skin Review: Group 3 IMEMDT 7,56,87; Animal Inadequate Evidence IMEMDT 39,67,86* contact, ingestion, subcutaneous, and intraperitoneal routes. Human systemic Reported in EPA TSCA Inventory. Community fight-To-Ihow List. OSHA PEL: TWA 10 pprn Classifiable as a Carcinogen DFG MAK: 2 ppm (11 mg/m3) DOT CLASSIFICATION: 3; Label: Flammable Liquid ingestion, inhalation, skin contact, and intraperitoneal routes. Experimental reproductive effects. A skin and eye irritant. Questionable carcinogen. A flammable fight fire, use foam, CO2, dry chemical. Incompatible with oxidzing materials. When heated to decomposition it emits acrid and irritating fumes. See also ESTERS. effects by inhalation: conjunctiva irritation, unspecified respiratory system effects, and nasal effects. Experimental reproductive Though animal experiments have shown the butyl alcohols to possess toxic properties, they have produced few cases of poisoning in industry, probably because of their low reported to have resulted in irritation of the eyes, with corneal inflammation, slight headache and H2ziness, slight irritation of the nose and throat, and dermatitis about fingers. Keratitis has also been reported. Mutation data reported. See also ALCOHOLS. Flammable liquid. Moderately explosive when exposed to flame. ACGIH TLV: TwA PPm (sensitizer); Not effects, A Severe sktn and eye irritant. SAFETY by voladty, The use of normal butyl alcohol is liquid when exposed to heat Or flame* To the fingerndi and along the side of the

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


Store n-butyl alcohol in a cool, dry, well-ventilated location, away from smoking areas. Fire hazard may be acute. Outside or detached storage is preferred. Separate from incompatibles. Containers should be bonded and grounded for transfer to avoid static sparks


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

Purification Methods

Dry it with MgSO4, CaO, K2CO3, or solid NaOH, followed by refluxing with, and distillation from, small amounts of calcium, magnesium activated with iodine, or aluminium amalgam. It can also be dried with molecular sieves, or by refluxing with n-butyl phthalate or succinate. (For method, see Ethanol.) n-Butanol can also be dried by efficient fractional distillation, water passing over in the first fraction as a binary azeotrope (contains about 37% water). An ultraviolet-transparent distillate has been obtained by drying with magnesium and distilling from sulfanilic acid. To remove bases, aldehydes and ketones, the alcohol is washed with dilute H2SO4, then NaHSO4 solution; esters are removed by boiling for 1.5hours with 10% NaOH. It has also been purified by adding 2g NaBH4 to 1.5L butanol, gently bubbling with argon and refluxing for 1 day at 50o. Then adding 2g of freshly cut sodium (washed with butanol) and refluxed for 1day. Distil and collect the middle fraction [Jou & Freeman J Phys Chem 81 909 1977]. [Beilstein 1 IV 1506.]


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.

1-Butanol Preparation Products And Raw materials

Raw materials

Preparation Products

1-Butanol Suppliers

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View Lastest Price from 1-Butanol manufacturers

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2019-04-02 1-Butanol Manufacturer; In stock GMP Factory
US $1.00 / KG 1KG High quality manufacturer TOP 3 largest production factory in China Chemwill Asia Co.,Ltd.
2018-07-24 1-Butanol Basic information
US $27.50 / KG 100KG 99% 100ton career henan chemical co

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