isobutyraldehyde
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IUPAC name :2-methylpropanal
InChI :InChI=1/C4H8O/c1-4(2)3-5/h3-4H,1-2H3
InChIKey :AMIMRNSIRUDHCM-UHFFFAOYAE
SMILES :CC(C)C=O
cas number :78-84-2
(EINECS) number :201-149-6
beilstein number :0605330
fema number :2220
coe number :92
jecfa number :252
fl. number :05.004
molar refractivity :20.72 ± 0.3 cm3
parachor :197.5 ± 4.0 cm3
index of refraction :1.367 ± 0.02
surface tension :21.0 ± 3.0 dyne/cm
density :0.781 ± 0.06 g/cm3
polarizability :8.21 ± 0.5 10-24cm3
XlogP : 0.90
XlogP3-AA : 0.80
molecular weight : 72.1057200 (IUPAC)
formula :C4 H8 O
BioActivity Analysis :17389658
NMR Predictor :Predict
 
 
export tariff code :2912.19.0000
fda reg :172.515

Suppliers :
Advanced Biotech :isobutyraldehyde
95% min. natural
Odor:  Acrid, Alcoholic
Berje :isoButyraldehyde
Cargill - Alfrebro :ISOBUTYRALDEHYDE FCC (EU NAT)
natural, Kosher
Fleurchem :isobutyraldehyde
natural
Fontarome :ISOBUTYRALDEHYDE
NATURAL
Odor:  Sharp, pungent
Frutarom :ISOBUTYRALDEHYDE
≥99.00%, NI, Kosher
Odor:  Aldehydic, Floral, Fresh, Green
Mooreganics :isobutyraldehyde
Natural (Organic Compliant)
Penta :isobutyraldehyde
Penta :isobutyraldehyde
natural
Robertet :Isobutyraldehyde
naturel
Sigma-Aldrich-SAFC :Isobutyraldehyde
≥98%, Kosher
Sigma-Aldrich-SAFC :Isobutyraldehyde
96%, natural, Kosher, FG

organoleptics :
odor type :spicy
odor strength :high ,
recommend smelling in a 0.10 % solution or less
odor description :¹
at 0.10 % in dipropylene glycol.  
fresh aldehydic floral
odor sample from :Berje Inc.
substantivity :84  Hour(s)

properties :
appearence :colorless clear liquid
assay : 98.00 to 100.00 %   
Food Chemicals Codex Listed :Yes
specific gravity :0.78300 to 0.78800 @ 25.00 °C.
pounds per gallon - calc. : 6.515 to 6.557
refractive index :1.37230 to 1.38200 @ 20.00 °C.
melting point : -65.00 °C. @ 760.00 mm Hg
boiling point : 63.00 °C. @ 760.00 mm Hg
acid value : 5.00  max.  KOH/g
vapor pressure :173.00000 mm/Hg @ 25.00 °C.
vapor density :2.4 ( Air = 1 )
flash point : -2.00  °F.  TCC  ( -18.89 °C. )
logP (o/w) : 0.74

safety :
most important hazard(s) :Xn - Harmful.
  R 11 - Highly flammable.
R 36/37/38 - Irritating to eyes, respiratory system, and skin.
S 02 - Keep out of the reach of children.
S 07/09 - Keep container tightly closed and in well-ventilated place.
S 16 - Keep away from sources of ignition - No Smoking.
S 23 - Do not breath vapour.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 33 - Take precautionary measures against static discharge.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
Oral Toxicity(LD50) :
  Oral-Rat    960.00  mg/kg
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 37(5), Pg. 104, 1972.

Dermal Toxicity(LD50) :
  Skin-Rabbit  7130.00  ul/kg
AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 10, Pg. 61, 1954.

Inhalation Toxicity(LC50) :
  Inhalation-Mouse  39500.00  mg/m3/2H
  Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 37(5), Pg. 104, 1972.

 

safety in use :
 
recommendation for isobutyraldehyde usage levels up to :
 not for fragrance use.
recommendation for isobutyraldehyde usage levels up to :
  5.0000 ppm in the flavor.

safety references :
EPI System :view
IUCLID :view
NIOSH International Chemical Safety Cards :search
NLM Hazardous Substances Data Bank :search
Chemical Carcinogenesis Research Information System :Search
Cancer Citations :Search
Toxicology Citations :Search
Carcinogenic Potency Database :Search
Env. Mutagen Info. Center :Search
National Toxicology Program :Search
Canada Domestic Sub. List :Yes
EPA Chem. Sub. Inventory : Yes
WISER :UN 2045
 
WGK Germany :1
 
 
 
 2-methylpropanal
(EINECS) number :201-149-6
RTECS :78-84-2
chemidplus :000078842
EPA/NOAA CAMEO :hazardous materials
EPA Substance Registry Services :78-84-2
dtp/nci :6739

references :
 2-methylpropanal
fl. number :05.004
jecfa number :252
NIST Chemistry WebBook :1227398684
pubchem :149525

Cosmetics :
Cosmetic uses : nail conditioning
perfuming agents

other :
reference : Luebke, William tgsc, (1987)¹
CosIng :cosmetic data
VCF-Online: VCF Volatile Compounds in Food
FDA Everything Added to Food in the United States (EAFUS)View
Household Products : Search
synonyms :
isobutanal
isobutyl aldehyde
isobutyral
isobutyric aldehyde
2-methyl propanal
2-methyl propionaldehyde
alpha-methyl propionaldehyde
2-methyl-1-propanal
2-methylpropanal
isopropyl aldehyde
 valine aldehyde

soluble in :
 alcohol
 water, 1:10
 water, 89000 mg/L @ 25C

(odor and/or flavor) blends with :
1-acetyl cyclohexyl acetate
 allyl amyl glycolate
 allyl butyrate
isoamyl benzoate
isoamyl butyrate
isoamyl formate
isoamyl isovalerate
isoamyl octanoate
para-anisyl formate
 benzaldehyde / methyl anthranilate schiff's base
 berry hexanoate
isobutyl anthranilate
isobutyl furyl propionate
 butyl isobutyrate
isobutyl propionate
2-butyl thiophene
2-sec-butyl-3-methoxypyrazine
 chamomile isobutyrate
 chamomile propionate
 cherry pentenoate
 cinnamyl formate
 citronellyl butyrate
 citronellyl hexanoate
 citronellyl isobutyrate
 citronellyl propionate
(E)-citronellyl tiglate
 cyclamen aldehyde
beta-cyclocitral
 cyclohexyl methyl pyrazine
2-cyclopentyl cyclopentanone
(E)-beta-damascone
(Z)-beta-damascone
beta-damascone
alpha-decalactone
2-decalinyl acetate
 diethyl malonate
 dihydrojasmone
 dimethyl succinate
S-(2,5-dimethyl-3-furyl) ethane thioate
(E,E)-2,4-dodecadien-1-ol
 ethyl (E)-2-octenoate
 ethyl 2-cyclohexyl propionate
 ethyl 2-furoate
 ethyl 2-octenoate
 ethyl 3-acetoxyhexanoate
 ethyl 3,5,5-trimethyl hexanoate
 ethyl acetoacetate
 ethyl levulinate
4-ethyl octanoic acid
 furfuryl propionate
 heptanal cyclic ethylene acetal
2-heptanol
 heptyl isobutyrate
2,4-hexadien-1-ol
2-hexen-1-al
(E)-2-hexen-1-al diethyl acetal
2-hexen-1-al diethyl acetal
2-hexen-1-ol
(E)-3-hexen-1-yl acetate
(E)-2-hexen-1-yl formate
(E)-2-hexen-1-yl hexanoate
(Z)-3-hexen-1-yl hexanoate
(Z)-3-hexen-1-yl isobutyrate
(Z)-3-hexen-1-yl isovalerate
 hexyl (E)-2-hexenoate
 hexyl 2-butenoate
 hexyl acetate
 hexyl octanoate
 hexyl pivalate
 melon valerate
 methyl (E)-2-hexenoate
 methyl (E)-3-nonenoate
 methyl (E)-3-nonenoate
 methyl (Z)-3-hexenoate
 methyl 2-undecynoate
 methyl 4-phenyl butyrate
 methyl alpha-ionone
2-methyl butyl 2-methyl butyrate
 methyl decanoate
 methyl heptanoate
 methyl heptenone
alpha-isomethyl ionone (90% min.)
 methyl ionyl acetate
 methyl isobutyrate
 methyl R-3-acetoxyhexanoate
2-methyl valeraldehyde
(E)-2-methyl-2-octen-1-al
2-methyl-2-octen-1-al
(E)-7-methyl-3-octen-2-one
3-methyl-3-pentanol
 nerolidyl isobutyrate
3-nonanon-1-yl acetate
(E,E)-3,5-octadien-2-one
 octen-1-yl cyclopentanone
 octyl 2-methyl butyrate
 octyl butyrate
 orris root concrete
 peanut oxazole
2-pentyl furan
 phenoxyethyl isobutyrate
1-phenyl propyl butyrate
2-phenyl propyl isobutyrate
4-phenyl-3-buten-2-ol
2-phenyl-4-pentenal
 pineapple pentenoate
 prenol
 prenyl ethyl ether
 prenyl hexanoate
isopropyl 2-methyl butyrate
isopropyl benzoate
 propylene acetal
 rhubarb undecane
 rose undecene
 terpinyl valerate
 tetrahydrofurfuryl butyrate
 tetrahydroionyl acetate
 timber dioxolane
4-(para-tolyl)-2-butanone
 tropical indene
 tropical ionone
 tropical thiazole
 violet dienyne

(odor and/or flavor) used in :
 apple
 beer
 bread white bread
 carrot
 clean
 currant
 fish
 fresh
 fruit
 modern
 tea green tea
 tobacco tabac tabaco leaf
 whiskey

natural occurrence in :
apple
apple juice 2 ppm
beer 5405 ppm
bread white bread 19770 ppm
carrot 50 ppm
citrus aurantium leaves
currant
fish 3257 ppm
paprika
pinus jeffreyi murr. leaves
potato chip 44 ppm
tea leaves
tobacco leaf



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