(E)-2-buten-1-al
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IUPAC name :(E)-but-2-enal
InChI :InChI=1/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+
InChIKey :MLUCVPSAIODCQM-NSCUHMNNBQ
SMILES :C/C=C/C=O
cas number :123-73-9
(EINECS) number :204-647-1
eu annex :605-009-00-9
coe number :11736
fl. number :05.135
molar refractivity :20.82 ± 0.3 cm3
parachor :187.3 ± 4.0 cm3
index of refraction :1.402 ± 0.02
surface tension :23.0 ± 3.0 dyne/cm
density :0.819 ± 0.06 g/cm3
polarizability :8.25 ± 0.5 10-24cm3
XlogP : 0.80
XlogP3-AA : 0.50
molecular weight : 70.0898400 (IUPAC)
formula :C4 H6 O
BioActivity Analysis :48413490
NMR Predictor :Predict
 
 
export tariff code :2912.19.5000
fda reg :unspecified

Suppliers :
Nanjing :crotonaldehyde

organoleptics :

properties :
appearence :colorless to pale yellow clear liquid
assay : 98.00 to 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :0.84600 @ 25.00 °C.
refractive index :1.43650 @ 20.00 °C.
melting point :-101.00 to -98.00 °C. @ 760.00 mm Hg
boiling point : 101.00 to 102.00 °C. @ 760.00 mm Hg
vapor pressure :30.00000 mm/Hg @ 25.00 °C.
vapor density :2.41 ( Air = 1 )
flash point : 48.00  °F.  TCC  ( 8.89 °C. )
logP (o/w) : 0.60

safety :
most important hazard(s) :T+ N - Very toxic, Dangerous for the environment.
  R 11 - Highly flammable.
R 23/24/25 - Toxic by inhalation, in contact with skin and if swallowed.
R 37/38 - Irritating to respiratory system and skin.
R 41 - Risk of serious damage to eyes.
R 48/22 - Harmful: danger of serious damage to health by prolonged exposure if swallowed.
R 50 - Very toxic to aquatic organisms.
R 68 - Possible risk of irreversible effects.
S 02 - Keep out of the reach of children.
S 09 - Keep container in a well-ventilated place.
S 16 - Keep away from sources of ignition - No Smoking.
S 20/21 - When using do not eat, drink or smoke.
S 23 - Do not breath vapour.
S 28 - After contact with skin, wash immediately with plenty of water.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
S 45 - In case of accident or if you feel unwell seek medical advice immediately.
S 61 - Avoid release to the environment. Refer to special instructions/safety data sheet.
Oral Toxicity(LD50) :
  Oral-Mouse    240.00  mg/kg
Biochemical Journal. Vol. 34, Pg. 1196, 1940.

Intraperitoneal-Mouse    160.00  mg/kg
from H. Zollner, Institut fur Biochemie, Der Universitat, Gras, Oct. 23, 1975Vol. 23OCT1975

Dermal Toxicity(LD50) :
  Skin-Rabbit  380.00  mg/kg
Union Carbide Data Sheet. Vol. 4/21/1967

Subcutaneous-Rat  140.00  mg/kg
Acta Pharmacologica et Toxicologica. Vol. 6, Pg. 299, 1950.

Subcutaneous-Mouse  160.00  mg/kg
Acta Pharmacologica et Toxicologica. Vol. 6, Pg. 299, 1950.

Inhalation Toxicity(LC50) :
  Inhalation-Rat  4000.00  mg/m3/30M
  Acta Pharmacologica et Toxicologica. Vol. 6, Pg. 299, 1950.

Inhalation-Mouse  1510.00  mg/m3/2H
  
 

safety in use :
 
recommendation for (E)-2-buten-1-al usage levels up to :
 not for fragrance use.
recommendation for (E)-2-buten-1-al usage levels up to :
 not for flavor use.

safety references :
EPI System :view
EPA-Iris :IRIS
NLM Hazardous Substances Data Bank :search
Chemical Carcinogenesis Research Information System :Search
Carcinogenic Potency Database :Search
Env. Mutagen Info. Center :Search
Canada Domestic Sub. List :Yes
EPA Chem. Sub. Inventory : Yes
WISER :UN 1143
 
WGK Germany :3
 
 
 
 (E)-but-2-enal
(EINECS) number :204-647-1
RTECS :GP9625000 for 123-73-9
chemidplus :000123739
EPA/NOAA CAMEO :hazardous materials
EPA Substance Registry Services :123-73-9

references :
 (E)-but-2-enal
fl. number :05.135
NIST Chemistry WebBook :3610514447
pubchem :197296

other :
VCF-Online: VCF Volatile Compounds in Food
synonyms :
(E)-but-2-enal
trans-2-buten-1-al
(E)-crotonal
(E)-crotonaldehyde
trans-crotonaldehyde
(E)-crotonic aldehyde
 topanel

soluble in :
 alcohol
 water, 150000 mg/L @ 2

natural occurrence in :
found in nature



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