2-methyl butyraldehyde
 
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IUPAC name :2-methylbutanal
InChI :InChI=1/C5H10O/c1-3-5(2)4-6/h4-5H,3H2,1-2H3
InChIKey :BYGQBDHUGHBGMD-UHFFFAOYAC
SMILES :CCC(C)C=O
(EINECS) number :202-485-6
cas number :96-17-3
beilstein number :1633540
fema number :2691
coe number :575
jecfa number :254
fl. number :05.049
molar refractivity :25.35 ± 0.3 cm3
parachor :237.3 ± 4.0 cm3
index of refraction :1.382 ± 0.02
surface tension :22.6 ± 3.0 dyne/cm
density :0.791 ± 0.06 g/cm3
polarizability :10.05 ± 0.5 10-24cm3
xlogp : 1.40
molecular weight : 86.1323000
formula :C5 H10 O
BioActivity Analysis :118093
 

 
IUPAC name :(2R)-2-methylbutanal
InChI :InChI=1/C5H10O/c1-3-5(2)4-6/h4-5H,3H2,1-2H3/t5-/m1/s1
InChIKey :BYGQBDHUGHBGMD-RXMQYKEDBA
SMILES :CC[C@@H](C)C=O
cas number :33204-48-7
molar refractivity :25.35 ± 0.3 cm3
parachor :237.3 ± 4.0 cm3
index of refraction :1.382 ± 0.02
surface tension :22.6 ± 3.0 dyne/cm
density :0.791 ± 0.06 g/cm3
polarizability :10.05 ± 0.5 10-24cm3
xlogp : 1.40
molecular weight : 86.1323000
formula :C5 H10 O
 

 
IUPAC name :(2S)-2-methylbutanal
InChI :InChI=1/C5H10O/c1-3-5(2)4-6/h4-5H,3H2,1-2H3/t5-/m0/s1
InChIKey :BYGQBDHUGHBGMD-YFKPBYRVBI
SMILES :CC[C@H](C)C=O
cas number :1730-97-8
molar refractivity :25.35 ± 0.3 cm3
parachor :237.3 ± 4.0 cm3
index of refraction :1.382 ± 0.02
surface tension :22.6 ± 3.0 dyne/cm
density :0.791 ± 0.06 g/cm3
polarizability :10.05 ± 0.5 10-24cm3
xlogp : 1.40
molecular weight : 86.1323000
formula :C5 H10 O
 

 
export tariff code :2912.19.9000
fda reg :unspecified
 

Suppliers :
Cargill - Alfrebro :2-METHYL BUTYRALDEHYDE
natural, Kosher
Oxford Chemicals Ltd :2-METHYLBUTYRALDEHYDE
≥95.00%, NI, Kosher
Sigma-Aldrich-SAFC :2-Methyl butyraldehyde
≥90%, FG, Kosher
Sigma-Aldrich-SAFC :2-Methyl butyraldehyde
90%, natural, US

organoleptics :
odor type :chocolate
odor strength :high ,
recommend smelling in a 1.00 % solution or less
odor description :
at 1.00 % in dipropylene glycol.  
musty cocoa coffee nutty

properties :
appearence :colorless to pale yellow clear liquid
assay : 98.00 to 100.00 %   sum of isomers
Food Chemicals Codex Listed :No
specific gravity :0.79900 to 0.80400 @ 25.00 °C.
pounds per gallon - calc. : 6.648 to 6.690
refractive index :1.38800 to 1.39300 @ 20.00 °C.
boiling point : 90.00 to 93.00 °C. @ 760.00 mm Hg
acid value : 5.00  max.  KOH/g
logp : 1.23

safety :
most important hazard(s) : Xi - Irritant
Oral Toxicity(LD50) : Oral-Rat    6400.00  mg/kg    
Dermal Toxicity(LD50) : Skin-Rabbit  5730.00  ul/kg    
flash point ( Deg. F. ) : 40.00  °F.  TCC  ( 4.44 °C. )
recommendation for 2-methyl butyraldehyde usage levels up to :
 not for fragrance use.
recommendation for 2-methyl butyraldehyde usage levels up to :
  10.0000 ppm in the flavor.

safety references :
EPI System :view
 
 
 2-methylbutanal
(EINECS) number :202-485-6
RTECS :ES3400000 for 96-17-3
chemidplus :000096173
EPA Substance Registry Services :96-17-3
NLM Chemical Carcinogenesis Research Information System :96-17-3
NLM Developmental and Reproductive Toxicity :96-17-3
NLM Env. Mutagen Info. Center :96-17-3
NLM GENetic TOXicology :96-17-3
dtp/nci :77077
 
 
 (2R)-2-methylbutanal
chemidplus :33204-48-7
EPA Substance Registry Services :33204-48-7
NLM Chemical Carcinogenesis Research Information System :33204-48-7
NLM Developmental and Reproductive Toxicity :33204-48-7
NLM Env. Mutagen Info. Center :33204-48-7
NLM GENetic TOXicology :33204-48-7
 
 
 (2S)-2-methylbutanal
chemidplus :1730-97-8
EPA Substance Registry Services :1730-97-8
NLM Chemical Carcinogenesis Research Information System :1730-97-8
NLM Developmental and Reproductive Toxicity :1730-97-8
NLM Env. Mutagen Info. Center :1730-97-8
NLM GENetic TOXicology :1730-97-8

references :
 2-methylbutanal
jecfa number :254
fl. number :05.049
pubchem :150335
NIST Chemistry WebBook :2021890246
 (2R)-2-methylbutanal
pubchem :43576769
 (2S)-2-methylbutanal
pubchem :8000139

other :
synonyms :
2-ethyl propanal
2-formyl butane
2-methyl butanal
alpha-methyl butanal
2-methyl butyraldehyde
alpha-methyl butyraldehyde
alpha-methyl butyric aldehyde
 methyl ethyl acetaldehyde
2-methyl-1-butanal
alpha-2-methyl-N-butanal

soluble in :
 alcohol
 water, 11200 mg/L @ 25C

insoluble in :
 water

stability :
 alkalis

(odor and/or flavor) blends with :
 acetal
 acetyl acetaldehyde dimethyl acetal
2-acetyl furan
 acetyl propionyl
2-acetyl pyrazine
3-acetyl pyridine
2-acetyl pyrrole
 acetyl pyrroline
2-acetyl thiazole
2-acetyl-2-thiazoline
5-acetyl-2,3-dihydro-1,4-thiazine
3-acetyl-2,5-dimethyl furan
2-acetyl-3-ethyl pyrazine
2-acetyl-3-methyl pyrazine
2-acetyl-3,5-dimethyl pyrazine
2-acetyl-5-methyl furan
 aconitic acid
 allyl 2-ethyl butyrate
 allyl hexanoate
 allyl phenyl acetate
 amyl cinnamate
isoamyl cinnamate
alpha-amyl cinnamyl acetate
isoamyl nonanoate
 amyl phenyl acetate
isoamyl phenyl acetate
isoamyl pyruvate
 amyl salicylate
alpha-angelica lactone
 benzothiazole
 benzyl mercaptan
 berry pentadienoate
 bornyl isobutyrate
 boronia butenal
 bran absolute
 butyl 2-methyl butyrate
 butyl acetoacetate
isobutyl butyrate
 butyl cinnamate
 butyl formate
 butyl lactate
 butyl laevo-lactate
 butyl mercaptan
 butyl phenyl acetate
isobutyl phenyl acetate
2-isobutyl-3,(5 and 6)-dimethyl pyrazine
2(4)-isobutyl-4(2),6-dimethyl dihydro-4H-1,3,5-dithiazine
 butyraldehyde
 butyramide
 butyroin
 caramel furanone
 chocolate pyrazine A
 chocolate pyrazine B
 cocoa butenal
 cocoa hexenal
 cocoa oleoresin
 cocoa pentenal
 cocoa propanal
 cocoa pyrazine
3,6-cocoa pyrazine
 coconut absolute
 coffee difuran
 coffee dione
 coffee furanone
 coffee pyrazine
 cognac oil white
 coumane
 coumarin
para-cresyl laurate
 cyclohexanone diethyl acetal
 cyclohexyl methyl pyrazine
(E,E)-2,4-decadien-1-al
 decyl propionate
 dicyclohexyl disulfide
2,5-diethyl thiazole
3,5-diethyl-2-methyl pyrazine
2,5-diethyl-3-methyl pyrazine
2,5-diethyl-4-methyl thiazole
 difurfuryl ether
 difurfuryl sulfide
6,7-dihydro-2,3-dimethyl-5H-cyclopentapyrazine
 dihydroxyacetophenone
 diisoamyl thiomalate
 dimethyl dihydrocyclopentapyrazine
2,3-dimethyl pyrazine
2,5-dimethyl pyrazine
2,6-dimethyl pyrazine
2,6-dimethyl pyridine
2,4-dimethyl thiazole
2,5-dimethyl thiazole
4,5-dimethyl thiazole
2,5-dimethyl thiophene
4,5-dimethyl-2-ethyl thiazole
4,5-dimethyl-2-ethyl-3-thiazoline
2,5-dimethyl-3-thiofuroyl furan
2,4-dimethyl-5-vinyl thiazole
2-ethoxythiazole
 ethyl (E)-crotonate
 ethyl 2-hydroxy-2-methyl butyrate
 ethyl 2-methyl-2-pentenoate
 ethyl 3-(furfuryl thio) propionate
 ethyl acetate
2-ethyl butyraldehyde
 ethyl cyclopentenolone
2-ethyl furan
 ethyl heptanoate
 ethyl hydrocinnamate
 ethyl methyl sulfide
 ethyl nonanoate
 ethyl phenyl acetate
 ethyl propionate
2-ethyl pyrazine
 ethyl pyruvate
S-ethyl thioacetate
 ethyl vanillin isobutyrate
1-ethyl-2-acetyl pyrrole
5-ethyl-2-methyl pyridine
2-ethyl-3-methoxypyrazine
2-ethyl-3,5(6)-dimethyl pyrazine mixture
2-ethyl-4-butanol
2-ethyl-4-methyl thiazole
(Z+E)-5-ethyl-4-methyl-2-(2-butyl) thiazoline
(Z+E)-5-ethyl-4-methyl-2-(2-methyl propyl) thiazoline
 eugenyl acetate
 fenugreek oleoresin
 fenugreek resinoid
 filbert heptenone
 filbert pyrazine
 fruity carboxylate
 furfuryl alcohol
 furfuryl isopropyl sulfide
 furfuryl mercaptan
 furfuryl methyl ether
 furfuryl propionate
1-furfuryl pyrrole
 furfuryl thioacetate
S-furfuryl thioformate
 furfuryl thiopropionate
3-(2-furyl) acrolein
 geranyl acetoacetate
 geranyl methyl tiglate
laevo-glutamine
 hazelnut oleoresin
 hazelnut pyrazine
(E,E)-2,4-heptadien-1-ol
gamma-heptalactone
 heptyl acetate
2-heptyl furan
2,4-hexadien-1-ol
3,4-hexane dione
3-hexanone
(E)-2-hexen-1-yl formate
(E)-2-hexen-1-yl phenyl acetate
1-hexen-3-ol
1-hexen-3-yl acetate
2-hexyl-5 or 6-keto-1,4-dioxane
1-hydroxy-2-butanone
4-hydroxybenzoic acid
 linalyl propionate
 maraniol
 menthofuran
2-methoxypyrazine
 methyl 2-(methyl thio) acetate
2-methyl 3-(methyl thio) furan 10% in triacetin
2-methyl 5-(methyl thio) furan
2-methyl anisole
para-methyl anisole
 methyl cyclopentenolone
 methyl ethoxypyrazine
2-methyl furan
 methyl furfuryl disulfide
S-methyl methioninium chloride
 methyl propionate
2-methyl pyrazine
2-methyl quinoxaline
5-methyl quinoxaline
4-methyl thiazole
2-methyl thio-3,5 or 6-methyl pyrazine
2-(methyl thio) acetaldehyde
 methyl thiol isovalerate
 methyl tiglate
 methyl valerate
3-methyl-2-buten-1-al
2-methyl-3-,5 or 6-(furfuryl thio) pyrazine
2-methyl-3-(methyl thio) pyrazine
2-methyl-3-propyl pyrazine
2-methyl-3,(5 or 6)-ethoxypyrazine
2-methyl-5-isopropyl pyrazine
(E,E)-2,4-nonadien-1-al
(E,Z)-2,6-nonadien-1-yl acetate
 nutty cyclohexenone
 nutty quinoxaline
 nutty thiazole
 peanut dithiazine
 peanut oxazole
 phenethyl octanoate
 phenyl acetaldehyde
 phenyl acetic acid
2-phenyl propyl butyrate
 popcorn pyrimidine
 prenyl benzoate
 prenyl formate
 propionaldehyde
2-propionyl thiazole
2-propionyl-2-thiazoline
 propyl alcohol
 propyl benzoate
 propyl formate
isopropyl formate
isopropyl pyrazine
2-propyl pyridine
 pyruvaldehyde
 saffron pyranone
 shoyu pyrazine
 sulfuryl butyrate
 sulfuryl decanoate
 sulfuryl formate
 sulfuryl hexanoate
 sulfuryl isobutyrate
 sulfuryl octanoate
 sulfuryl propionate
 tetrahydrofurfuryl acetate
2,3,5,6-tetramethyl pyrazine
2-thienyl mercaptan
2-thiophene thiol
(E)-tiglic aldehyde
 tobacco butenal
 tonka bean absolute
 tonka bean resinoid
 tricyclodecenyl isobutyrate
2,3,5-trimethyl pyrazine
2,4,5-trimethyl thiazole
 tropical thiazole
 valeraldehyde
 valeraldehyde dibutyl acetal
 valeraldehyde propylene glycol acetal
gamma-valerolactone
 vanillin
 vanillyl isobutyrate
2-vinyl pyrazine
 vinyl sulfurol
 whiskey lactone
2,6-xylenol

(odor and/or flavor) used in :
 apple
 banana
 berry
 bread
 caramel
 chocolate cocoa
 coffee
 grape
 malt
 olive
 papaya
 rum
 tomato
 tropical
 wine

natural occurrence in :
apple
cardamom
cheese cheddar cheese
cheese swiss cheese
currant black currant
fish
grape
kohlrabi
data pagelovage flower oil @ trace%
data pagelovage leaf oil @ trace%
papaya
paprika
peanut roasted peanut
potato
rum



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