Dimethylacetate

Isobuttersaeure

Isobutyricacid

alpha-Methylpropanoate

alpha-Methylpropionate

Isobutanoate

Dimethylacetic acid

Isobutyrate

Isopropylformic acid

Kyselina isomaselna

methylpropionic acid

a-Methylpropanoate

a-Methylpropionate

alpha-Methylpropanoic acid

alpha-Methylpropionic acid

KQNPFQTWMSNSAP-UHFFFAOYSA-N

2-Methylpropionsaeure

Isobutanoic acid

ISOBUTYRIC ACID

isopropyl carboxylic acid

a-Methylpropanoic acid

a-Methylpropionic acid

NATURAL ISOBUTYRIC ACID

alpha-isobutyric acid

ALQ

ISB

iso-Butyrate

2-Propanecarboxylic acid

i-butyrate

Isobutyric acid, analytical standard

Nat.Isobutyric Acid

1iup

2-Methylpropanoic acid

2-Methylpropionic acid

AC1L1MVA

AC1Q5RPW

Iso-butyric acid

i-Butyric acid

.alpha.-Methylpropanoic acid

.alpha.-Methylpropionic acid

iso-C3H7COOH

2-methyl propanoic acid

2-methyl-propanoic acid

2-METHYL-PROPIONIC ACID

Kyselina isomaselna [Czech]

AC1Q1O87

Cenex RP b2

GTPL1060

Isobutyric acid (natural)

K400

KSC489M7N

Tenox EBP 2

Tenox IBP 2

Tenox IBP-2

2,2-dimethylacetic acid

Acetic acid, dimethyl-

UN2529

CTK3I9676

HMDB01873

I0103

2-Methyl Propionic Acic, Natural

ACMC-209ph0

CHEMBL108778

DB02531

Isobutyric acid, 99%

Methylpropanoic acid, 2-

NSC62780

Propanoic acid,2-methyl-

RP18490

WLN: QVY1&1

8LL210O1U0

bmse000439

C02632

HSDB 5228

ZINC901420

BBL011415

DTXSID4021636

Isobutyric acid, certified reference material, TraceCERT(R)

LS-2857

OR034208

OR249586

OR281996

OR342159

STL146521

Tenox IBP-2 Grain Pr

UN 2529

CHEBI:16135

DSSTox_CID_1636

UNII-8LL210O1U0

AN-23989

ANW-37282

Caswell No. 503AA

DSSTox_GSID_21636

KB-77935

NSC 62780

NSC-62780

Propanoic acid, 2-methyl-

Propionic acid, 2-methyl-

SC-23341

BB_SC-6843

DSSTox_RID_76250

LMFA01020071

MFCD00002658

AI3-24260

RTR-032122

Tenox IBP-2 Grain Pr.

TR-032122

AKOS000118733

EPA Pesticide Chemical Code 101502

BRN 0635770

FEMA No. 2222

FT-0625068

79-31-2

I14-10607

Z955123672

ETHYL, 1-CARBOXY-1-METHYL-

Tox21_201207

F2191-0099

PROPOXY, 2-METHYL-1-OXO-

CAS-79-31-2

Isobutyric acid, >=99%, FCC, FG

2597-39-9

MCULE-7783770647

NCGC00248957-01

NCGC00258759-01

EINECS 201-195-7

Isobutyric acid [UN2529] [Flammable liquid]

Isobutyric acid, natural, >=99%, FCC, FG

MolPort-001-783-185

996-30-5 (hydrochloride salt)

11047-EP2269610A2

11047-EP2270003A1

11047-EP2272841A1

11047-EP2275401A1

11047-EP2277848A1

11047-EP2289510A1

11047-EP2295055A2

11047-EP2298763A1

11047-EP2298772A1

11047-EP2308839A1

11047-EP2308858A1

11047-EP2311453A1

11047-EP2311816A1

11047-EP2311817A1

11047-EP2311822A1

11047-EP2316457A1

11047-EP2316458A1

11047-EP2316825A1

11047-EP2316826A1

11047-EP2316827A1

11047-EP2316828A1

11047-EP2371803A1

11047-EP2374538A1

11047-EP2374787A1

11047-EP2377843A1

88696-EP2287158A1

88696-EP2289876A1

88696-EP2295411A1

88696-EP2298777A2

88696-EP2305825A1

Isobutyric acid [UN2529] [Flammable liquid]

533-90-4 (calcium salt)

19455-20-0 (potassium salt)

22228-82-6 (ammonium salt)

Isobutyric acid, puriss. p.a., >=99.5%

4-02-00-00843 (Beilstein Handbook Reference)

InChI=1/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6

A pKa of 4.84(1) indicates isobutyric acid will exist almost entirely in the anion form at pH values of 5 to 9 and therefore volatilization from water surfaces and moist soil is not expected to be an important fate process(2). Isobutyric acid is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 1.81 mm Hg(3).
Literature: (1) Kortum G et al; Dissociation Constants of Organic Acids in Aqueous Solution. International Union of Pure and Applied Chemistry. London: Butterworth (1961) (2) Doucette WJ; pp. 141-188 in Handbook of Property Estimation Methods for Chemicals. Boethling RS, Mackay D, eds. Boca Raton, FL: Lewis Publ (2000) (3) Daubert TE, Danner RP; Physical & Thermodynamic Properties of Pure Chemicals 4 NY: Hemisphere Pub Corp (1989)

The Koc of isobutyric acid is estimated as 77(SRC), using a log Kow of 0.94(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that isobutyric acid is expected to have high mobility in soil. The pKa of isobutyric acid is 4.84(4), indicating that this compound will exist almost entirely in anion form in the environment and anions generally do not adsorb more strongly to soils containing organic carbon and clay than their neutral counterparts(5).
Literature: (1) Sangster J; LOGKOW Databank. Sangster Res Lab Montreal Quebec, Canada (1994) (2) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 4-9 (1990) (3) Swann RL et al; Res Rev 85: 17-28 (1983) (4) Kortum G et al; Dissociation Constants of Organic Acids in Aqueous Solution. International Union of Pure and Applied Chemistry. London: Butterworth (1961) (5) Doucette WJ; pp. 141-188 in Handbook of Property Estimation Methods for Chemicals. Boethling RS, Mackay D, eds. Boca Raton, FL: Lewis Publ (2000)