isobutyric acid
 
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IUPAC name :2-methylpropanoic acid
InChI :InChI=1/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)/f/h5H
InChIKey :KQNPFQTWMSNSAP-JSWHHWTPCI
SMILES :CC(C)C(=O)O
(EINECS) number :201-195-7
eu annex :607-063-00-9
cas number :79-31-2
beilstein number :0635770
fema number :2222
coe number :6
jecfa number :253
fl. number :08.006
molar refractivity :22.10 ± 0.3 cm3
parachor :210.4 ± 4.0 cm3
index of refraction :1.408 ± 0.02
surface tension :30.4 ± 3.0 dyne/cm
density :0.983 ± 0.06 g/cm3
polarizability :8.76 ± 0.5 10-24cm3
xlogp : 0.50
molecular weight : 88.1051200
formula :C4 H8 O2
BioActivity Analysis :48414828
 
 
fda reg :172.515 h. number :2915.60.0000
organoleptics : 
odor type :acidic
odor strength :high ,
recommend smelling in a 1.00 % solution or less
odor description :
at 1.00 % in dipropylene glycol.  
acidic butter sour cheese
taste description³ :at 15.00 ppm.  
Acidic, sour dairy, creamy, cheese, cultured dairy nuance
substantivity :8  Hour(s)
properties : 
appearence :colorless clear liquid
assay : 99.00 - 100.00 %   
Food Chemicals Codex Listed :Yes
specific gravity :0.94400 - 0.94800 @ 25.00 °C.
pounds per gallon - calc. : 7.855 to 7.888
refractive index :1.39200 - 1.39500 @ 20.00 °C.
melting point : -47.00 - -46.00 °C. @ 760.00 mm Hg
boiling point : 153.00 - 154.00 °C. @ 760.00 mm Hg
boiling point : 85.00 - 86.00 °C. @ 50.00 mm Hg
logp : 0.94
safety : 
most important hazard(s) : Xn - Harmful.
  
Oral Toxicity(LD50) : Oral-Rat    280.00  ul/kg    
Dermal Toxicity(LD50) : Skin-Rabbit  500.00  ul/kg    
  
flash point ( Deg. F. ) : 132.00  °F.  TCC  ( 55.56 °C. )
  
recommendation for isobutyric acid usage levels up to :
  0.0500 % in the fragrance concentrate.
  
recommendation for isobutyric acid usage levels up to :
  470.0000 ppm in the flavor.
  
safety links : 
(EINECS) number :201-195-7
rtecs :NQ4375000 for 79-31-2
chemidplus :000079312
epa-srs :79-31-2
  
other : 
 
references : 
pubchem :149562
NIST Chemistry WebBook :1130356798
  
reference : Mosciano, Gerard P&F 24, No. 2, 49, (1999)³
synonyms :
isobutanoic acid
isobutyric acid
 dimethyl acetic acid
2-methyl propanoic acid
alpha-methyl propanoic acid
2-methyl propionic acid
alpha-methyl propionic acid
isopropyl formic acid
soluble in :
 alcohol
 fixed oils
 glycerin
 propylene glycol
 water, 1 part to 5 parts water
 water, 167000 mg/L @ 20C
(odor and/or flavor) used in :
 apple
 beer
 bread
 butter
 butterscotch
 caramel
 chamomile
 cheese
 cream
 dairy
 fruit
 valerian
 vanilla
 vegetable
 yeast
natural occurrence in :
apricot
arnica root
bread
bread white bread
data pagechamomile oil @ 0.03%
chamomile roman
cheese bleu cheese
dairy
fruits
laurel leaves
masterwort
peppermint oil
raspberry fruit
rue leaf
strawberry jam
vinegar



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