ChemicalBook > CAS DataBase List > Benzonitrile

Benzonitrile

Product Name
Benzonitrile
CAS No.
100-47-0
Chemical Name
Benzonitrile
Synonyms
BN;FB;Benzonitril;BRN;PHENYL CYANIDE;Benzontrile;3BN;BRR;2BNC;AKOS 91614
CBNumber
CB7852585
Molecular Formula
C7H5N
Formula Weight
103.12
MOL File
100-47-0.mol
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Benzonitrile Property

Melting point:
-13 °C (lit.)
Boiling point:
191 °C (lit.)
Density 
1.01
vapor density 
3.6 (vs air)
vapor pressure 
1 hPa at 20 °C
refractive index 
n20/D 1.528(lit.)
Flash point:
161 °F
storage temp. 
Store below +30°C.
solubility 
Insoluble in cold water. 1% soluble in boiling water. Miscible with alcohol and oils, but not soluble in liquid paratlirt. Poorly soluble in Propylene glycol.
form 
Liquid
color 
Clear colorless to slightly yellow
Relative polarity
0.333
Odor
Almond-like.
explosive limit
1.4-7.2%(V)
Water Solubility 
10 g/L (100 ºC)
λmax
λ: 300 nm Amax: 1.0
λ: 310 nm Amax: 0.40
λ: 335 nm Amax: 0.03
λ: 360-400 nm Amax: 0.01
Merck 
14,1097
BRN 
506893
Dielectric constant
26.0（20℃）
Exposure limits
NIOSH: IDLH 14 ppm(25 mg/m3)
Stability:
Stable. Incompatible with strong bases, strong acids, strong oxidizing agents, strong reducing agents. Air-sensitive. Combustible.
InChIKey
JFDZBHWFFUWGJE-UHFFFAOYSA-N
LogP
1.5 at 20℃
CAS DataBase Reference
100-47-0(CAS DataBase Reference)
NIST Chemistry Reference
Benzonitrile(100-47-0)
EPA Substance Registry System
Benzonitrile (100-47-0)
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Safety

Hazard Codes 
Xn
Risk Statements 
21/22-38
Safety Statements 
23
RIDADR 
UN 2224 6.1/PG 2
WGK Germany 
2
RTECS 
DI2450000
Autoignition Temperature
550 °C
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II
HS Code 
29269090
Hazardous Substances Data
100-47-0(Hazardous Substances Data)
Toxicity
LDLo orl-rat: 720 mg/kg AMRL** TR-74-78,74
IDLA
14 ppm (66 mg/m3)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.01800
Product name
Benzonitrile
Purity
for synthesis
Packaging
100mL
Price
$32.6
Updated
2024/03/01
Sigma-Aldrich
Product number
8.01800
Product name
Benzonitrile
Purity
for synthesis
Packaging
500mL
Price
$76.9
Updated
2024/03/01
Sigma-Aldrich
Product number
8.01800
Product name
Benzonitrile
Purity
for synthesis
Packaging
1L
Price
$129
Updated
2024/03/01
Sigma-Aldrich
Product number
270318
Product name
Benzonitrile
Purity
for HPLC, 99.9%
Packaging
100ml
Price
$163
Updated
2024/03/01
Sigma-Aldrich
Product number
B8959
Product name
Benzonitrile
Purity
ReagentPlus?, 99%
Packaging
20L
Price
$1305
Updated
2023/06/20
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Benzonitrile Chemical Properties,Usage,Production

Description

Benzonitrile is a colorless, oily liquid. It hasan almond odor. Molecular weight = 103.13. Boilingpoint = 191℃; Freezing/Melting point = - 13℃; Criticaltemperature= 426℃; Critical pressure = 611 psia; Specificgravity (H2O:1) = 1.01 at 25℃; Relative vapor density(air=1) =3.6; Electrical conductivity =2 3 106 pS/m;Ratio of specific heats of vapor (gas) = 1.091; Latentheat of vaporization = 3.67 3 105 J/kg; Heat ofcombustion =-351 3 105 J/kg. Explosive limits in air:Lower= 1.4%, Upper = 7.2%; Flash point = 71℃;Autoignition temperature = 550℃. Hazard Identification(based on NFPA-704 M Rating System): Health 2,Flammability 1, Reactivity 0. Poor solubility in water.

Chemical Properties

Bezonitrile is a colorless, oily liquid. It has a almond odor and a bitter taste. Slightly soluble in cold water, the solubility in water at 100°C is 1%; miscible with common organic solvents. When heated to decomposition, benzonitrile emits toxic hydrogen cyanide and oxides of nitrogen (HSDB 1988).

Occurrence

Benzonitrile is reported to be found in natural cocoa aroma), in milk products, roasted filberts and peanuts and cooked trassi . Benzonitrile also has been detected in the thermal decomposition products of flexible polyurethane foam.

Uses

The most important commercial use for benzonitrile is the synthesis of benzoguanamine, which is a derivative of melamine and is used in protective coatings and molding resins. It is used intermediate for rubber chemicals; solvent for nitrile rubber, specialty lacquers, and many resins and polymers, and for many anhydrous metallic salts.

Application

Benzonitrile is a widely utilized as a solvent and an intermediate in industries making drugs, perfumes, dyes, rubber, textiles, resins and specialty lacquers. It finds application as a versatile precursor for many derivatives. It coordinates with transition metal to form complexes which act as synthetic intermediates.

Preparation

Benzonitrile can be prepared by following methods:
1) on a small scale by the dehydration in an inert solvent with phosphorus oxychloride or benzenesulfonyl chloride and an organic amine.
2) from benzoic acid by heating with lead thiocyanate.
3) by heating sodium benzenesulfonate with sodium cyanide.
4) by adding benzenediazonium chloride solution to a hot aq sodium cyanide solution containing cupric sulfate and distilling by ammoxidation of toluene.
Benzonitrile can also be produced in high yield by the vapor-phase catalytic ammoxidation of toluene.

Definition

ChEBI: Benzonitrile is a nitrile that is hydrogen cyanide in which the hydrogen has been replaced by a phenyl group. It is a member of benzenes and a nitrile.

Synthesis Reference(s)

Chemistry Letters, 13, p. 1913, 1984
Journal of the American Chemical Society, 111, p. 4903, 1989 DOI: 10.1021/ja00195a050
Tetrahedron Letters, 11, p. 2085, 1970

General Description

Benzonitrile appears as a clear colorless liquid with an almond-like odor. Flash point 161°F. Denser (at 8.4 lb / gal) than water and slightly soluble in water. Used as a specialty solvent and to make other chemicals.

Air & Water Reactions

Slightly soluble in water.

Reactivity Profile

The cyano group can be readily hydrolyzed in the presence of mineral acids to produce stable, moderately toxic benzoic acid . When heated to decomposition, Benzonitrile emits highly toxic fumes of nitrogen oxides and hydrogen cyanide [Sax, 9th ed., 1996, p. 353].

Hazard

High toxicity; absorbed by skin.

Health Hazard

Benzonitrile may enter the human body by ingestion, absorption through the skin, or inhalation. The earliest symptoms of cyano compound intoxication may be weakness, headaches, confusion, and occasionally nausea and vomiting. The respiratory rate and depth will usually be increased at the beginning and at later stages become slow and gasping. Blood pressure is usually normal, especially in the mild or moderately severe cases, although the pulse rate is usually more rapid than normal.

Fire Hazard

Special Hazards of Combustion Products: Toxic hydrogen cyanide and oxides of nitrogen may form in fire.

Industrial uses

Benzonitrile is used as an intermediate for rubber chemicals and as a solvent for nitrile rubber, specialty lacquers, many resins, polymers and for many anhydrous metallic salts (HSDB 1988; Hawley 1981). It is principally used as an intermediate for benzoguanamine (HSDB 1988). It is also used as an additive in nickel-plating baths, separating naphthalene and alkylnaphthalenes from non-aromatics by azetropic distillation; as jet-fuel additive; in cotton bleaching baths; as a drying additive for acrylic fibers; and in the removal of titanium tetrachloride and vanadium oxychloride from silicon tetrachloride (HSDB 1988; Smiley 1981). Benzonitrile is also used in perfumes at a maximum level of 0.2% in the final product (Opdyke 1979).

Safety Profile

Poison by intraperitoneal andsubcutaneous routes. Moderately toxic by ingestion,inhalation, and skin contact. A skinirritant. Combustible liquid. When heated todecomposition it emits toxic fumes of CN- and NOx.

Potential Exposure

Mutagen,Primary Irritant. Benzonitrile is used as an electroplatingagent; in organic synthesis of pharmaceuticals; dyestuffs;rubber chemicals; as a solvent and chemical intermediate.Incompatibilities: Strong acids which can liberate hydrogencyanide. Forms explosive mixture with air.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, rinsemouth and get medical attention. If cyanide poisoning issuspected use amyl nitrate capsules if symptoms develop.All area employees should be trained regularly in emergency measures for cyanide poisoning and in CPR. A cyanide antidote kit should be kept in the immediate work areaand must be rapidly available. Kit ingredients should bereplaced every 1 2 years to ensure freshness. Personstrained in the use of this kit, oxygen use, and CPR must bequickly available.

Metabolism

Benzonitrile is mainly hydroxylated in vivo to cyanophenols, a small amount being hydrolysed to benzoic acid (Williams 1959). Benzonitrile also forms 6>-hydroxybenzonitrile, m-hydroxybenzonitrile, and /p-hydroxybenzonitrile in rabbits (HSDB 1988). In rabbit, 50% of a dose of 150 mg/kg was converted to conjugated cyanophenols and 10% of the benzonitrile fed was excreted as benzoic acid. Hydrogen cyanide is not a metabolite of benzonitrile (Williams 1959) and cyanide was not found to be formed by benzonitrile either in vivo or in vitro (Tanii and Hashimoto 1984). The in vivo microsomal hydroxylation of specifically deuterated benzonitrile in the rat yielded mainly 4-hydroxybenzonitrile with 41% retention of deuterium (Daly et al 1968).

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Store in tightly closed containers in a cool, well-ventilated area. Away from strong acids.Metal containers involving the transfer of this chemicalshould be grounded and bonded. Drums must be equippedwith self-closing valves, pressure vacuum bungs, and flamearresters. Use only nonsparking tools and equipment, especially when opening and closing containers of this chemical. Sources of ignition, such as smoking and open flames,are prohibited where this chemical is used, handled, orstored in a manner that could create a potential fire orexplosion hazard.

Shipping

UN2224 Benzonitrile, Hazard Class: 6.1; Labels: 6.1—Poisonous materials.

Purification Methods

Dry benzonitrile with CaSO4, CaCl2, MgSO4 or K2CO3, and distil it from P2O5 in an all-glass apparatus, under reduced pressure (b 69o/10mm), collecting the middle fraction. Distillation from CaH2 causes some decomposition of benzonitrile. Isonitriles can be removed by preliminary treatment with conc HCl until the odour of isonitrile (carbylamine) has gone, followed by preliminary drying with K2CO3. (This treatment also removes amines.) Steam distil (to remove small quantities of carbylamine). The distillate is extracted into ether, washed with dilute Na2CO3, dried overnight with CaCl2, and the ether is removed by evaporation. The residue is distilled at 40mm (b 96o) [Kice et al. J Am Chem Soc 82 834 1960]. Conductivity grade benzonitrile (specific conductance 2 x 10-8 mho) is obtained by treatment with anhydrous AlCl3, followed by rapid distillation at 40-50o under vacuum. After washing with alkali and drying with CaCl2, the distillate is redistilled in a vacuum several times at 35o before fractionally crystallising several times by partial freezing. It is dried over finely divided activated alumina from which it is withdrawn when required [Van Dyke & Harrison J Am Chem Soc 73 402 1951]. [Beilstein 9 IV 892.]

Incompatibilities

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. They are incompatible Benzonitrile with acids; mixing nitriles with strong oxidizing acids can lead to extremely violent reactions.

Waste Disposal

(1) Mix with calcium hypochlorite and flush to sewer with water or (2) incinerate.

Benzonitrile Preparation Products And Raw materials

Raw materials

Copper(I) Cyanide Sulfur Ammonium hydroxide Sodium sulfide Toluene Phenol Benzeneacetonitrile Sodium nitrite Benzamide o-Toluidine Thionyl chloride POTASSIUM CYANIDE Aluminum oxide Ammonia

Preparation Products

Ethyl N-(diphenylmethylene)glycinate Benzoguanamine CYCLOPROTHRIN Alclometasone Dipropionate 3-Nitrobenzonitrile 3-BENZOYL PROPIOPHENONE 4-CHLORO-2,5-DIPHENYLTHIENO[2,3-D]PYRIMIDINE 1,4-Bis(4-cyanostyryl)benzene Bromoxynil Lanolin 3,4,5-Trimethoxybenzaldehyde Chlorothalonil 4-tert-Butylbenzylamine Bis(benzonitrile)palladium chloride Dimidium bromide Azosemide 2,6-DIMETHOXYBENZONITRILE Sulphur Blue 7 1,3,5-Triazine, 2-phenyl- (9CI) METHYL(5-MERCAPTO-1H-BENZIMIDAZOL-2-YL)CARBAMATE Prazosin BENZAMIDOXIME HYDROCHLORIDE Bunazosin hydrochloride Amitraz 5-Phenyltetrazole Benzophenone imine
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View Lastest Price from Benzonitrile manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
Benzonitrile 100-47-0
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-10-24
Wuhan Biet Co., Ltd.
Product
Benzonitrile 100-47-0
Price
US $0.00-0.00/kg
Min. Order
200kg
Purity
99.75
Supply Ability
99999
Release date
2023-12-18
Hebei Mojin Biotechnology Co., Ltd
Product
Benzonitrile 100-47-0
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-09-14

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