1-pyrroline
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IUPAC name :3,4-dihydro-2H-pyrrole
InChI :InChI=1/C4H7N/c1-2-4-5-3-1/h3H,1-2,4H2
InChIKey :ZVJHJDDKYZXRJI-UHFFFAOYAY
SMILES :C1CC=NC1
cas number :5724-81-2
(EINECS) number :227-230-6
fema number :3898
jecfa number :1603
fl. number :14.167
molar refractivity :21.47 ± 0.5 cm3
parachor :173.7 ± 8.0 cm3
index of refraction :1.506 ± 0.05
surface tension :33.3 ± 7.0 dyne/cm
density :0.95 ± 0.1 g/cm3
polarizability :8.51 ± 0.5 10-24cm3
XlogP : 0.50
molecular weight : 69.1050800
formula :C4 H7 N
NMR Predictor :Predict
 
 
export tariff code :unspecified
fda reg :unspecified

organoleptics :
odor type :ammoniacal
odor strength :high ,
recommend smelling in a 0.10 % solution or less
odor description :
at 0.10 % in propylene glycol.  
ammonia shrimp

properties :
appearence :colorless clear liquid
assay : 99.00 to 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :0.84900 to 0.85500 @ 25.00 °C.
pounds per gallon - calc. : 7.065 to 7.114
refractive index :1.44000 to 1.44600 @ 20.00 °C.
boiling point : 87.00 to 89.00 °C. @ 760.00 mm Hg
acid value : 1.00  max.  KOH/g
vapor pressure :24.30000 mm/Hg @ 25.00 °C.
flash point : 56.00  °F.  TCC  ( 13.33 °C. )
logP (o/w) : -0.78

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) :0.012 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA) :0.40 (μg/capita/day)
Threshold of concern :540 (μg/person/day)
 
recommendation for 1-pyrroline usage levels up to :
 not for fragrance use.

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
Cancer Citations :Search
 
 
 
 3,4-dihydro-2H-pyrrole
(EINECS) number :227-230-6
chemidplus :005724812
EPA Substance Registry Services :5724-81-2

references :
 3,4-dihydro-2H-pyrrole
fl. number :14.167
jecfa number :1603
NIST Chemistry WebBook :3904635313
pubchem :656805

other :
VCF-Online: VCF Volatile Compounds in Food
synonyms :
3,4-dihydro-2H-pyrrole
delta(1)-pyrroline

soluble in :
 alcohol
 water

(odor and/or flavor) blends with :
2-acetyl-1-pyrroline
1-amino-2-propanol
 amyl amine
 butyl amine
(±)-sec-butyl amine
isobutyl amine
 cyclamen aldehyde
 cyclamen propanal
 dicyclohexyl disulfide
4,5-dimethyl thiazole
1,4-dithiane
 ethyl amine
 fish thiol
 hexyl amine
 hyacinth acetal
 leerall
2-methyl butyl amine
2-methyl piperidine
 ocean propanal
3-penten-2-one
isopentylidene isopentyl amine
 phenethyl amine
 propionyl pyrroline 1% in vegatable oil triglyceride
isopropyl amine
 propylene glycol dibenzoate
 pyridine
 satinaldehyde
3-tetrahydrothiophenone
 triethyl amine
 trimethyl amine
(R)-N,N,alpha-trimethyl benzyl amine
2,4,5-trimethyl oxazole
 tripropyl amine

(odor and/or flavor) used in :
 shrimp

natural occurrence in :
shrimp roasted shrimp



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