2-acetyl-1-pyrroline
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IUPAC name :1-(4,5-dihydro-3H-pyrrol-2-yl)ethanone
InChI :InChI=1/C6H9NO/c1-5(8)6-3-2-4-7-6/h2-4H2,1H3
InChIKey :DQBQWWSFRPLIAX-UHFFFAOYAG
SMILES :CC(=O)C1=NCCC1
cas number :99583-29-6
fema number :4249
jecfa number :1604
fl. number :14.080
molar refractivity :31.36 ± 0.5 cm3
parachor :249.1 ± 8.0 cm3
index of refraction :1.531 ± 0.05
surface tension :36.4 ± 7.0 dyne/cm
density :1.09 ± 0.1 g/cm3
polarizability :12.43 ± 0.5 10-24cm3
XlogP : -0.10
XlogP3-AA : -0.40
molecular weight : 111.1417600 (IUPAC)
formula :C6 H9 N O
NMR Predictor :Predict
 
 
export tariff code :unspecified
fda reg :unspecified

Suppliers :
CHEMSTEP :Ethanone, 1-(3,4-dihydro-2H-pyrrol-2-yl)- (9CI)
Nanjing :1-(3,4-dihydro-2H-pyrrol-2-yl)-ethanone

organoleptics :
odor strength :medium ,
recommend smelling in a 1.00 % solution or less
odor description :
at 1.00 % in propylene glycol.  
fishy

properties :
appearence :colorless to yellow solid
assay : 95.00 to 100.00 %   
Food Chemicals Codex Listed :No
melting point : 19.00 °C. @ 760.00 mm Hg
boiling point : 182.00 to 183.00 °C. @ 760.00 mm Hg
flash point : 151.00  °F.  TCC  ( 66.11 °C. )
logP (o/w) : -1.27

safety :
Oral Toxicity(LD50) :
  Not determined
Dermal Toxicity(LD50) :
  Not determined
Inhalation Toxicity(LC50) :
  Not determined
 

safety in use :
Maximised Survey-derived Daily Intakes (MSDI-EU) :0.073 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA) :0.10 (μg/capita/day)
modified Theoretical Added Maximum Daily Intake (mTAMDI) :340 (μg/person/day)
Threshold of concern :540 (μg/person/day)
 
recommendation for 2-acetyl-1-pyrroline usage levels up to :
 not for fragrance use.
 
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA on the "LIBRARY" link.
 average usual ppmaverage maximum ppm
baked goods : 2.0000010.00000
beverages(nonalcoholic) : --
beverages(alcoholic) : --
breakfast cereal : 0.200001.00000
cheese : 0.400002.00000
chewing gum : --
condiments / relishes : 0.100000.50000
confectionery froastings : 1.000005.00000
egg products : --
fats / oils : 0.100000.50000
fish products : 0.200001.00000
frozen dairy : 0.400002.00000
fruit ices : 0.400002.00000
gelatins / puddings : --
granulated sugar : --
gravies : --
hard candy : --
imitation dairy : --
instant coffee / tea : --
jams / jellies : --
meat products : 0.200001.00000
milk products : 0.400002.00000
nut products : --
other grains : 0.200001.00000
poultry : 0.200001.00000
processed fruits : 0.400002.00000
processed vegetables : --
reconstituted vegetables : --
seasonings / flavors : 0.100000.50000
snack foods : 1.000005.00000
soft candy : --
soups : 0.100000.50000
sugar substitutes : --
sweet sauces : --
 
 
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFFA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFFA, 2002i).
Note : mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm.
 average usage mg/kgmaximum usage mg/kg
Dairy products, excluding products of category 02.0 (01.0) : 0.400002.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0) : 0.100000.50000
Edible ices, including sherbet and sorbet (03.0) : 0.400002.00000
Processed fruit (04.1) : 0.400002.00000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) : --
Confectionery (05.0) : 1.000005.00000
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) : 0.200001.00000
Bakery wares (07.0) : 2.0000010.00000
Meat and meat products, including poultry and game (08.0) : 0.200001.00000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) : 0.200001.00000
Eggs and egg products (10.0) : --
Sweeteners, including honey (11.0) : --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0) : 0.100000.50000
Foodstuffs intended for particular nutritional uses (13.0) : 0.200001.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1) : --
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) : 1.000005.00000
Ready-to-eat savouries (15.0) : 1.000005.00000
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0) : 0.200001.00000

safety references :
European Food Safety Athority(efsa) :Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
EPI System :view
 
 
 
 1-(4,5-dihydro-3H-pyrrol-2-yl)ethanone
chemidplus :99583-29-6
EPA Substance Registry Services :99583-29-6

references :
 1-(4,5-dihydro-3H-pyrrol-2-yl)ethanone
fl. number :14.080
jecfa number :1604
NIST Chemistry WebBook :10848514
pubchem :10536967

other :
FDA Everything Added to Food in the United States (EAFUS)View
synonyms :
1-(3,4-dihydro-2H-pyrrol-5-yl) ethanone
1-(4,5-dihydro-3H-pyrrol-2-yl)ethanone

soluble in :
 alcohol
 water

(odor and/or flavor) blends with :
1-amino-2-propanol
 amyl amine
 butyl amine
(±)-sec-butyl amine
isobutyl amine
4,5-dimethyl thiazole
 ethyl amine
 hexyl amine
2-methyl butyl amine
2-methyl piperidine
3-penten-2-one
isopentylidene isopentyl amine
 phenethyl amine
 propionyl pyrroline 1% in vegatable oil triglyceride
isopropyl amine
(R)-N,N,alpha-trimethyl benzyl amine
 tripropyl amine

(odor and/or flavor) used in :
 cereal
 cheese
 dairy
 fish
 fruit

natural occurrence in :
not found in nature



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