alpha-irone
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IUPAC name :(E)-4-(2,5,6,6-tetramethyl-1-cyclohex-2-enyl)but-3-en-2-one
InChI :InChI=1/C14H22O/c1-10-6-7-11(2)14(4,5)13(10)9-8-12(3)15/h6,8-9,11,13H,7H2,1-5H3/b9-8+
InChIKey :JZQOJFLIJNRDHK-CMDGGOBGBC
SMILES :CC1CC=C(C(C1(C)C)\C=C\C(=O)C)C
cas number :79-69-6
(EINECS) number :201-219-6
beilstein number :1343498
fema number :2597
coe number :145
jecfa number :403
fl. number :07.011
molar refractivity :66.41 ± 0.3 cm3
parachor :530.0 ± 6.0 cm3
index of refraction :1.500 ± 0.02
surface tension :30.4 ± 3.0 dyne/cm
density :0.914 ± 0.06 g/cm3
polarizability :26.32 ± 0.5 10-24cm3
XlogP : 4.60
molecular weight : 206.3238800 (IUPAC)
formula :C14 H22 O
NMR Predictor :Predict
 
 
export tariff code :2914.23.0000
fda reg :172.515

Suppliers :
Givaudan :Irone Alpha
Odor:  Floral, Orris, Woody
Penta :irone alpha
refined
Vigon :Irone Alpha
Odor:  FRESH, SMOOTH ODOR OF VIOLETS AND ORRIS.

organoleptics :
odor type :floral
odor strength :medium ,
recommend smelling in a 10.00 % solution or less
odor description :¹
at 10.00 % in dipropylene glycol.  
orris floral berry violet woody powdery
odor sample from :Firmenich & Company Inc.
substantivity :104  Hour(s)

properties :
appearence :colorless to pale yellow clear liquid
assay : 98.00 to 100.00 %   sum of isomers
Food Chemicals Codex Listed :No
specific gravity :0.93200 to 0.93400 @ 25.00 °C.
pounds per gallon - calc. : 7.755 to 7.772
refractive index :1.49900 to 1.50200 @ 20.00 °C.
boiling point : 110.00 to 112.00 °C. @ 3.00 mm Hg
boiling point : 68.00 to 73.00 °C. @ 0.01 mm Hg
acid value : 1.00  max.  KOH/g
vapor pressure :0.00500 mm/Hg @ 20.00 °C.
flash point :> 212.00  °F.  TCC  ( > 100.00 °C. )
logP (o/w) : 4.35

safety :
most important hazard(s) : None - None found.
Oral Toxicity(LD50) :
  Oral-Rat    5000.00  mg/kg

Dermal Toxicity(LD50) :
  Skin-Rabbit  5000.00  mg/kg

Inhalation Toxicity(LC50) :
  Not determined
 

safety in use :
Maximised Survey-derived Daily Intakes (MSDI-EU) :7.70 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA) :3.00 (μg/capita/day)
Structure Class :II
 
IFRA other specification :<= 2% Pseudomethylionone
recommendation for alpha-irone usage levels up to :
  2.0000 % in the fragrance concentrate.
recommendation for alpha-irone usage levels up to :
  10.0000 ppm in the flavor.

safety references :
European Food Safety Athority(efsa) :Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
EPI System :view
IFRA :IFRA - ( Found under : Pseudomethylionones )
Canada Domestic Sub. List :Yes
EPA Chem. Sub. Inventory : Yes
 
WGK Germany :2
 
 
 
 (E)-4-(2,5,6,6-tetramethyl-1-cyclohex-2-enyl)but-3-en-2-one
(EINECS) number :201-219-6
RTECS :EN0335000 for 79-69-6
chemidplus :000079696
EPA Substance Registry Services :79-69-6

references :
 (E)-4-(2,5,6,6-tetramethyl-1-cyclohex-2-enyl)but-3-en-2-one
fl. number :07.011
jecfa number :403
NIST Chemistry WebBook :2445936104
pubchem :149583

Cosmetics :
Cosmetic uses : perfuming agents

other :
reference : Luebke, William tgsc, (1986)¹
CosIng :cosmetic data
VCF-Online: VCF Volatile Compounds in Food
synonyms :
(Z)-2,6-(Z)-21,22-alpha-irone
cis-(2,6)-cis- (2(1),2(2))-alpha-irone
cis-2,6-cis-21,2 2-alpha-irone
6-methyl-alpha-ionone
4-(2,5,6,6-tetramethyl cyclohex-2-enyl) but-3-en-2-one
cis-4-(2,5,6,6-tetramethyl cyclohex-2-enyl) but-3-en-2-one
(E)-4-(2,5,6,6-tetramethyl-1-cyclohex-2-enyl)but-3-en-2-one
4-(2,5,6,6-tetramethyl-2-cyclohexenyl)-3-buten-2-one
4,2,5,6,6-trimethyl-2-cyclohexen-1-yl-3-buten-2-one

soluble in :
 alcohol
 water, 110 mg/L @ 20C

insoluble in :
 water

stability :
 alcoholic, good
 antiperspirant spray, poor
 bath foam
 non-discoloring in most media
 ph = 10 moderate
 ph = 2 poor
 powder detergent, moderate
 soap, good
 toiletry, good

(odor and/or flavor) blends with :
 amber carbinol
 ambrette seed oil
 ambroxan
isoamyl benzoate
alpha-amyl cinnamaldehyde
 amyl octanoate
isoamyl salicylate
 amyris wood oil
 angelica root oil
 animal carbolactone
para-anisaldehyde
para-anisyl alcohol
para-anisyl propanal
 beeswax absolute
 benzoin resinoid
 benzyl alcohol
 benzyl benzoate
 benzyl cinnamate
 benzyl salicylate
 bergamot oil
 berry hexanoate
 bois de rose oil
 buchu mercaptan
isobutyl benzoate
isobutyl cinnamate
isobutyl isovalerate
 butyl valerate
 campholene acetate
 carrot seed oil
 cassie absolute
 cassis pentanone
 cedarwood oils
 cinnamyl alcohol
 citronellol
 clary sage oil
 clover nitrile
 coconut absolute
 conifer acetate
 coriander seed oil
 costus root absolute
 costus root oil
 costus root resinoid
 costus valerolactone
 cuminaldehyde
 currant bud absolute black
 cyclamen aldehyde
2-cyclohexyl cyclohexanone
 cyclohexyl ethyl acetate
 cyclohexyl ethyl alcohol
beta-damascenone
beta-damascone
 decanol
 decyl acetate
 diethyl dimethyl-2-cyclohexenone
 dihydro-alpha-ionone
 dihydro-beta-ionone
 dimethyl benzyl carbinol
 dimethyl ionone
 dodecanal
 dodecanol
 ethyl (E,Z)-2,4-decadienoate
 ethyl cinnamate
 ethyl laurate
 ethyl myristate
 ethyl ortho-anisate
 ethyl vanillin
 ethylene brassylate
isoeugenyl acetate
 eugenyl formate
isoeugenyl formate
 fir balsam absolute
 floral pyranol
 formoxymethyl isolongifolene
 geraniol
 geranium oil
 geranyl butyrate
 geranyl methyl tiglate
 geranyl phenyl acetate
 guaiacwood oil
 hay absolute
 heliotropin
 heliotropyl acetone
 heliotropyl diethyl acetal
 heptanal dimethyl acetal
 herbal undecanone
(Z)-3-hexen-1-yl benzoate
(Z)-3-hexen-1-yl salicylate
alpha-hexyl cinnamaldehyde
 ho leaf oil
 hyacinth ether
 hydroxycitronellal
(E)-beta-ionone
alpha-ionone
 ionones
beta-ionyl acetate
 leerall
 linalool
laevo-linalool
 linalool oxide
 linalyl acetate
 maltyl isobutyrate
 methyl 2-(methyl thio) butyrate
 methyl alpha-ionone
 methyl cedryl ketone
 methyl cinnamate
6-methyl coumarin
 methyl dihydrojasmonate
 methyl heptanoate
iso-alpha-methyl ionone
N-methyl ionone
(E)-alpha-methyl ionone (74-80%)
 methyl ionone gamma supreme
 methyl ionones
 methyl isoeugenol
 methyl thiomethyl butyrate
 mimosa absolute
 muguet carboxaldehyde
 musks
 myristyl alcohol
 nerol
 neroli oil
 nerolidol
 neryl isobutyrate
gamma-nonalactone
 nonanal
 nonanol
(Z)-2-nonen-1-al
(Z)-6-nonen-1-al
 nonisyl acetate
 oakmoss absolute
 ocean propanal
 octyl propionate
 orris butanal
 orris capronate
 orris hexanone
 orris pyridine
 orris root resinoid
 passiflora acetate
 patchouli ethanone
 pepper oil black
 phenethyl acetate
1-phenethyl mercaptan
 phenethyl phenyl acetate
 phenethyl salicylate
3-phenyl propyl alcohol
3-phenyl propyl isovalerate
 propyl acetate
para-isopropyl acetophenone
 propyl isobutyrate
 prune glycidate
 raspberry ketone
 raspberry ketone acetate
 raspberry ketone methyl ether
 rhodinol
 rose absolute
 rose butanoate
 rose oxides
 sandalwood oil
 santall
alpha-terpineol
 tmh aldehyde
4-(para-tolyl)-2-butanone
 tonka bean absolute
gamma-undecalactone
 undecanol
10-undecen-1-yl acetate
 vanilla absolute
 vanillyl acetate
 verymoss
 vetiver oil
 violet leaf absolute
 violet methyl carbonate
 viridiflorol
 woody acetate
 woody amylene
 woody nonane
 ylang ylang oil

(odor and/or flavor) used in :
 berry
 floral
 orris iris
 powder
 raspberry
 seedy
 violet
 wallflower giroflee

natural occurrence in :
orris root
raspberry



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