isobutyric acid

Full Material List
2-methylpropanoic acid

Identifiers

FEMA 2222
CAS 79-31-2
EINECS 201-195-7
Synonyms
  • iso butanoic acid
  • iso buttersaeure
  • nat.iso butyric acid
  • iso butyric acid (natural)
  • iso butyric acid natural
  • iso butyric acid, natural
  • cenex RP b2
  • dimethyl acetic acid
  • 2,2- dimethylacetic acid
  • kyselina isomaselna
  • 2- methyl propanoic acid
  • alpha- methyl propanoic acid
  • 2- methyl propionic acid
  • alpha- methyl propionic acid
  • 2- methyl-propanoic acid
  • 2- methylpropanoic acid
  • a- methylpropanoic acid
  • methylpropanoic acid, 2-
  • 2- methylpropionic acid
  • a- methylpropionic acid
  • propanoic acid, 2-methyl-
  • propionic acid, 2-methyl-
  • iso propyl formic acid
  • iso propylformic acid
  • tenox EBP 2
  • tenox IBP-2
JECFA Food Flavoring 253
JECFA Food Additive N/A
DG SANTE Food Flavourings 08.006 2-methylpropionic acid
DG SANTE Food Contact Materials N/A
FDA UNII 8LL210O1U0
CoE Number 6
XlogP3-AA N/A
Molecular Weight 88.10616
Molecular Formula C4 H8 O2

Organoleptic

Organoleptic Notes
  • 1. Odor Type: acidic Odor Strength:medium ,recommend smelling in a 1.00 % solution or less
  • Substantivity:8 hour(s) at 100.00 %
  • acidic sour cheesy dairy buttery rancid
  • Odor Description:at 1.00 % in propylene glycol. acidic sour cheese dairy buttery rancidLuebke, William tgsc, (2017)
  • Odor sample from: Sigma-Aldrich
  • Natural odor sample from: Harrmann & Reimer Corporation
Odor acidic
acidic, sour, cheesy, dairy, buttery, rancid,
Flavor acidic
acidic, sour, cheesy, limburger, cheese, dairy, creamy,

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Properties

Food Chemicals Codex Listed Yes
Appearance colorless clear liquid (est)
Assay 99.00 to 100.00
Specific Gravity 0.94400 to 0.94800 @ 25.00 °C.
Lbs/Gal (est) 7.855 to 7.888
Refractive Index 1.39200 to 1.39500 @ 20.00 °C.
Melting Point -47.00 to -46.00 °C. @ 760.00 mm Hg
Boiling Point 153.00 to 154.00 °C. @ 760.00 mm Hg
Flash Point 132.00 °F. TCC ( 55.56 °C. )
Acid Value N/A
Vapor Pressure 1.810000 mmHg @ 25.00 °C.
Vapor Density 3.0 ( Air = 1 )
logP (o/w) 0.94
Soluble In
  • alcohol
  • fixed oils
  • glycerin
  • propylene glycol
  • water, 1 part to 5 parts water
  • water, 167000 mg/L @ 20 °C (exp)
Occurrence
  • apricot fruit
  • arnica root
  • bay laurel leaf
  • bread
  • bread white bread
  • burdock root
  • carob bean
  • carrot plant
  • cayenne sap
  • celery leaf
  • celery plant
  • celery shoot
  • chamomile oil @ 0.03%
  • chamomile roman chamomile
  • cheese bleu cheese
  • dairy
  • fruits
  • masterwort
  • pepper bell pepper fruit
  • peppermint leaf
  • peppermint oil
  • raspberry red raspberry fruit
  • rue leaf
  • strawberry jam
  • vinegar
  • wine