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Crotonaldehyde

Product Name
Crotonaldehyde
CAS No.
123-73-9
Chemical Name
Crotonaldehyde
Synonyms
BDQ;BUTENAL;Topanel;Crotonal;topanelca;2-BUTENAL;Bu-2-tenal;NCI-C56279;Topanel CA;t-2-Butenal
CBNumber
CB3733701
Molecular Formula
C4H6O
Formula Weight
70.09
MOL File
123-73-9.mol
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Crotonaldehyde Property

Melting point:
−76 °C(lit.)
Boiling point:
104 °C(lit.)
Density 
0.853 g/mL at 20 °C(lit.)
vapor density 
2.41 (vs air)
vapor pressure 
32 mm Hg ( 20 °C)
refractive index 
n20/D 1.437
Flash point:
48 °F
storage temp. 
2-8°C
solubility 
water: soluble425.4g/L at 20°C
form 
Liquid
color 
Clear
Odor
Pungent
explosive limit
19.5%
Water Solubility 
150 g/L (20 ºC)
Merck 
14,2596
BRN 
906731
Exposure limits
TLV-TWA 6 mg/m3 (2 ppm)(ACGIH); IDLH 400 ppm (NIOSH).
InChIKey
MLUCVPSAIODCQM-NSCUHMNNSA-N
CAS DataBase Reference
123-73-9(CAS DataBase Reference)
NIST Chemistry Reference
Crotonaldehyde(123-73-9)
EPA Substance Registry System
trans-Crotonaldehyde (123-73-9)
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Safety

Hazard Codes 
F,T+,N
Risk Statements 
11-24/25-26-37/38-41-48/22-50-68-R68-R50-R48/22-R41-R37/38-R26-R24/25-R11
Safety Statements 
26-28-36/37/39-45-61-28A-S61-S45-S36/37/39-S28A-S26-16
RIDADR 
UN 1143 6.1/PG 1
WGK Germany 
3
RTECS 
GP9625000
9-13-23
Autoignition Temperature
320 °F
HazardClass 
6.1
PackingGroup 
I
HS Code 
29121990
Hazardous Substances Data
123-73-9(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

H315Causes skin irritation

H318Causes serious eye damage

H330Fatal if inhaled

H335May cause respiratory irritation

H341Suspected of causing genetic defects

H373May cause damage to organs through prolonged or repeated exposure

H400Very toxic to aquatic life

Precautionary statements

P201Obtain special instructions before use.

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

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

P370+P378In case of fire: Use … for extinction.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
262668
Product name
Crotonaldehyde, predominantly trans
Purity
≥99%, contains 0.1-0.2% BHT as stabilizer, 1% H
Packaging
5ml
Price
$40.7
Updated
2021/03/22
Sigma-Aldrich
Product number
262668
Product name
Crotonaldehyde, predominantly trans
Purity
≥99%, contains 0.1-0.2% BHT as stabilizer, 1% H
Packaging
1l
Price
$338
Updated
2021/03/22
Sigma-Aldrich
Product number
262668
Product name
Crotonaldehyde, predominantly trans
Purity
≥99%, contains 0.1-0.2% BHT as stabilizer, 1% H
Packaging
100ml
Price
$64.3
Updated
2021/03/22
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Crotonaldehyde Chemical Properties,Usage,Production

Chemical Properties

Crotonaldehyde is water-white (turns paleyellow on contact with air) with an irritating, pungent, suffocating odor. The chemical can turn pale yellow when it contacts air. The chemical has a molecular weight of 70.1, a boiling point of 219°F, and a freezing point of -101°F. The vapor pressure is 30mm Hg at 25°C and the specific gravity is 0.87. The lower explosive limit is 2.1% and the upper explosive limit is 15.5%. Crotonaldehyde may be incompatible with caustics, ammonia, strong oxidizers, nitric acid, and amines. It also has the ability to polymerize at high temperatures.

Uses

Crotonaldehyde (2-butenal, β-methyl acrolein, propylene aldehyde) is similar in structure to acrolein, as both are α,β-unsaturated aldehydes. This structural similarity leads to similar sensitizing and irritating properties of the two compounds. Crotonaldehyde is used industrially in the preparation of other chemicals (chiefly sorbic acid), flavoring agents, and can form endogenously and in the environment.
Crotonaldehyde is used in the manufacture ofbutyl alcohol, butyraldehyde, and in severalorganic synthesis.

General Description

Water-white to straw-colored liquid with a pungent, suffocating odor. Used as a chemical intermediate in a variety of industrial processes (surfactants, textiles, paper, fuels, insecticides, leather tanning, etc.). Used in chemical warfare.

Air & Water Reactions

Highly flammable.

Reactivity Profile

Crotonaldehyde is an aldehyde. Crotonaldehyde can react violently with strong oxidizing reagents, e.g., reaction with conc. nitric acid leads to instantaneous ignition [Andrussow, L., Chim. Ind. (Paris), 1961, 86, p. 542]. In contact with strong acids or bases Crotonaldehyde will undergo an exothermic condensation reaction. Reaction with 1,3-butadiene is particularly violent [Greenlee, K. W., Chem. Eng. News, 1948, 26, p. 1985]. Crotonaldehyde may rapidly polymerize with ethyl acetoacetate (Soriano, D.S. et al. 1988. Journal of Chemical Education 65:637.).

Health Hazard

Although slightly less toxic, crotonaldehyde is similar chemically and toxicologically to acrolein, which is rated as extremely toxic. Toxic concentrations for human inhalation have been reported at 12 mg/m3/10 minutes. Irritant dose to human eye is 45 ppm. As with acrolein, vapor exposures cause severe and painful eye irritation, damage to cornea, lacrimation (tearing), irritation of nasal membranes, pulmonary edema (filling of lungs with fluid) and gastrointestinal distress when ingested.

Health Hazard

Crotonaldehyde causes severe irritation ofthe eyes, nose, lungs, and throat. Exposureto a concentration of 12 mg/m3 in air for10 minutes can cause burning of the lungsand throat in humans. The symptoms ofinhalation toxicity in rats were excitement,behavioral change, convulsion, and death.The same symptoms were observed whencrotonaldehyde was administered subcutaneously.
LC50 value, inhalation (rats): 4000 mg/m3/30 minutes
LD50 value, subcutaneous (rats): 140 mg/kg
Crotonaldehyde is less toxic than acroleinor formaldehyde. The toxic symptoms, however,were similar to those of acrolein. Thecis-isomer of crotonaldehyde is mutagenic; itcaused cancer in test animals. Oral administrationof 2660 mg/kg for 2 years producedtumor in the liver in rats. Evidence of carcinogenicityin humans is not yet confirmed.

Fire Hazard

Vapors form explosive mixtures in air or in sewers. Hazardous peroxides and acids emitted when heated to decomposition. Avoid nitric acid. Unstable, avoid oxygen, heat, elevated pressures. Hazardous polymerization may occur. Avoid contact with alkaline materials such as caustic ammonia or amines, or at elevated temperatures.

Safety Profile

Suspected carcinogen. A poison by ingestion, subcutaneous, and intraperitoneal routes. Mutation data reported. A lachrymating material that is very dangerous to the eyes. Human respiratory system irritant by inhalation. Can cause corneal burns and is irritating to the skin. In case of contact, immediately flush the skin or eyes with water for at least 15 minutes and get medlcal attention. See also ALDEHYDES. Dangerous fire hazard when exposed to heat or flame. To fight fire, use alcohol foam, Con, dry chemical. Incompatible with 1,3-butadiene and oxidizing materials. When heated to decomposition it emits acrid smoke and fumes.

Potential Exposure

Crotonaldehyde is used as a warning agent in fuel gases and gas line leaks; as solvent; in Crotonaldehyde 935 chemical warfare; as an intermediate in the manufacture of n-butanol and crotonic and sorbic acids; in resin and rubber antioxidant manufacture; also used as a solvent in mineral oil purification; as an alcohol denaturant.

Shipping

UN1143 Crotonaldehyde or Crotonaldehyde, stabilized, Hazard class: 6.1; Labels: 6.1-Poison Inhalation Hazard, 3-Flammable liquid, Inhalation Hazard Zone B.

Incompatibilities

Vapors may form explosive mixture with air. A strong reducing agent. Readily converted by oxygen to peroxides and acids; heat or contact with alkalis and many other substances may cause polymerization. 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, nonoxidizing mineral acids; ammonia, organic amines; aliphatic amines; aromatic amines; 1,3-butadiene, strong bases. Liquid attacks some plastics, rubber, and coatings

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed. May be absorbed on vermiculite and burned in open incinerator or dissolved in solvent and sprayed into incinerator

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Crotonaldehyde Suppliers

Shanghai YuMei Pharmaceutical Chemical Co., Ltd.
Tel
13661490451
Fax
QQ627235036
Email
xyfn@163.com
Country
China
ProdList
585
Advantage
58
Shanghai Na Qian Chemical Technology Co. Ltd.
Tel
0373-7129549-
Fax
QQ:2468833170
Email
2841375912@qq.com
Country
China
ProdList
2373
Advantage
52
JinYan Chemicals(ShangHai) Co.,Ltd.
Tel
13817811078;021-50426030
Fax
86-021-50426522,50426273
Email
sales@jingyan-chemical.com
Country
China
ProdList
10006
Advantage
60
Accela ChemBio Co.,Ltd.
Tel
400-0665055
Fax
021-50795055
Email
sales@accelachem.com
Country
China
ProdList
11499
Advantage
64
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202- ; ;
Fax
+86-21-64545202
Email
jerry.ma@hanhonggroup.com;jerry.ma@hanhonggroup.com;jerry.ma@hanhonggroup.com
Country
China
ProdList
43255
Advantage
64
Syntechem Co.,Ltd
Tel
Please Email
Fax
E-Mail Inquiry
Email
info@syntechem.com
Country
China
ProdList
13009
Advantage
57
BEST-REAGENT
Tel
400-1166-196;028-84555506- ;028-84555506-
Email
cdhxsj@163.com;1955352637@qq.com;cdhxsj@163.com
Country
China
ProdList
11718
Advantage
57
China Langchem Inc.
Tel
021-58956006- ;021-58950017-
Fax
021-58956100
Email
sales@langchem.com;sales3@langchem.com
Country
China
ProdList
736
Advantage
57
Sinopharm Chemical Reagent Co,Ltd.
Tel
86-21-63210123
Fax
86-21-63290778 86-21-63218885
Email
sj_scrc@sinopharm.com
Country
China
ProdList
9844
Advantage
79
Hubei YuanCheng Pharmaceutical Co., Ltd.
Tel
18062666904
Fax
QQ:2355880546
Email
wyy01@ycphar.com
Country
China
ProdList
670
Advantage
65
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View Lastest Price from Crotonaldehyde manufacturers

Wuhan wingroup Pharmaceutical Co., Ltd
Product
Crotonaldehyde 123-73-9
Price
US $10.00/KG
Min. Order
1KG
Purity
99.9%
Supply Ability
100MT/Month
Release date
2021-07-08
qingdao trust agri chemical co.,ltd
Product
Crotonaldehyde 123-73-9
Price
US $6.00/L
Min. Order
1L
Purity
98%
Supply Ability
20KLper month
Release date
2020-12-17
Shaanxi Dideu Medichem Co. Ltd
Product
Crotonaldehyde 123-73-9
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20T
Release date
2020-01-02

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