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para-alpha-dimethyl styrene

Chemical Structure

General Material Information

Preferred name para-alpha-dimethyl styrene
Trivial Name p-Cymenene
Short Description p,alpha-dimethylstyrene
Formula C10 H12
CAS Number 1195-32-0
FEMA Number 3144
Flavis Number 1.01
ECHA Number 214-795-9
FDA UNII XC8HY3OB86
Nikkaji Number J86.000J
MDL MFCD00036510
COE Number 2260
xLogP3-AA 3.70 (est)
NMR Predictor External link
JECFA Food Flavoring 1333 p,alpha-dimethylstyrene
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 1195-32-0 ; P,ALPHA-DIMETHYLSTYRENE
Synonyms
  • benzene, 1-methyl-4-(1-methylethenyl)-
  • p- cymene, dehydro-
  • p- cymenene
  • para- cymenene
  • dehydro p-cymene
  • dehydro para cymene
  • dehydro para-cymene
  • dehydro-p-cymene
  • dehydro-para-cymene
  • p-,alpha- dimethyl styrene
  • p-alpha- dimethyl styrene
  • p,alpha- dimethyl styrene
  • para-,alpha- dimethyl styrene
  • alpha-, para- dimethylstyrene
  • p-,alpha- dimethylstyrene
  • p-a- dimethylstyrene
  • p-alpha- dimethylstyrene
  • p,a- dimethylstyrene
  • p,alpha- dimethylstyrene
  • para-,alpha- dimethylstyrene
  • para-alpha- dimethylstyrene
  • dimethylstyrene, p-a-
  • habanene (Bedoukian)
  • 4-methyl isopropenyl benzene
  • 2-(para- methyl phenyl) propene
  • 4-methyl-1-(1-methylvinyl)benzene
  • 1-methyl-4-(1-methyl ethenyl) benzene
  • 1-methyl-4-(1-methylethenyl)benzene
  • 1-methyl-4-(prop-1-en-2-yl)benzene
  • 1-methyl-4-isopropenyl benzene
  • 1-methyl-4-isopropenylbenzene
  • 1-methyl-4-prop-1-en-2-yl-benzene
  • 1-methyl-4-prop-1-en-2-ylbenzene
  • 4-methyl-a-methylstyrene
  • 4-methyl-alpha-methyl styrene
  • methyl-p-isopropenylbenzene
  • alpha- methyl-p-methyl styrene
  • a- methyl-p-methylstyrene
  • methyl-para-isopropenyl benzene
  • alpha- methyl-para-methyl styrene
  • 4-methylisopropenylbenzene
  • p- methylisopropenylbenzene
  • 2-(4-methylphenyl)propene
  • 2-(p- methylphenyl)propene
  • para-iso propenyl toluene
  • 1-iso propenyl-4-methylbenzene
  • 4-iso propenyltoluene
  • p-iso propenyltoluene
  • iso propenyltoluene, p-
  • styrene, p-a-dimethyl-
  • styrene, p,a-dimethyl-
  • 2-para- tolyl propene
  • 1-p- tolyl-1-methylethylene
  • 2-p- tolyl-1-propene
  • 2-(p- tolyl)propene
  • 2-p- tolylpropene
  • 1-methyl-4-prop-1-en-2-ylbenzene
  • Styrene, p,α-dimethyl-
  • 1-Methyl-4-(1-methylethenyl)benzene
  • 1-Methyl-4-isopropenylbenzene
  • p-Methyl-α-methylstyrene
  • p,α-Dimethylstyrene
  • p-Isopropenyltoluene
  • α,p-Dimethylstyrene
  • 4-Methyl-α-methylstyrene
  • α,4-Dimethylstyrene
  • 2-(p-Methylphenyl)propene
  • 2-p-Tolylpropene
  • 4-Isopropenyltoluene
  • 1-Isopropenyl-4-methylbenzene
  • p-Cymenene
  • 4-Methylisopropenylbenzene
  • p-Methylisopropenylbenzene
  • 1-p-Tolyl-1-methylethylene
  • 2-p-Tolyl-1-propene
  • 4-Isopropenyl-1-methylbenzene
  • 4,α-Dimethylstyrene
  • NSC 361058
  • α-Methyl-p-methylstyrene
  • 1-Methyl-4-(1-methylvinyl)benzene
  • 1-Methyl-4-(prop-1-en-2-yl)benzene
  • 2-(4-Methylphenyl)-1-propene

US / EU / FDA / JECFA / FEMA / Scholar / Patents

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Other Information

(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):View
CHEBI:View
HMDB (The Human Metabolome Database):HMDB29641
FooDB:FDB000812
Export Tariff Code:2903.19.6050
Typical G.C.
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 132.2056427002
Boiling Point 186 to 189°C @ 760 mm Hg
Vapor Pressure 0.834 mmHg @ 25 °C
Flash Point TCC Value 62.78 °C TCC
logP (o/w) 3.782 est
Shelf life 24 months (or longer if stored properly.)
Storage notes Store in cool, dry place in tightly sealed containers, protected from heat and light.
Solubility
alcohol Yes
mineral oil Yes
paraffin oil Yes
water, 35.29 mg/L @ 25 °C (est) Yes
water No

Organoleptic Properties

Odor Type: Phenolic
phenolic, spicy, styrene, clove, guaiacol, musty, coffee, nutty
General comment At 0.10 % in dipropylene glycol. phenolic spicy styrene clove guaiacol
Mosciano, Gerard P&F 21, No. 1, 33, (1996) Phenolic, spicy, styrene, eugenol and guaiacol-like with musty, coffee and nutty nuances
Flavor Type: Spicy
spicy, balsamic, musty, clove, guaiacol, nutty
Mosciano, Gerard P&F 21, No. 1, 33, (1996) At 2.50 ppm. Spicy, balsamic, musty and eugenol / guaiacol-like with a nutty nuance
Herbal notes especially Italian type dishes. Good for enhancing spices, such as habanero. Characteristic oregano, spicy
Used in alcoholic beverages and soft confection at 5ppm, in bakery and frozen confection at 2.5ppm, and desserts and non-alcoholic beverages at 1ppm. Storage: oxidizes, and slowly polymerises in the presence of air. Spicy

Occurrences

Potential Uses

Applications
Odor purposes Almond, Citrus, Coffee, Lemon, Lime, Nutmeg, Parsley leaf, Peach, Pepper, Pine, Vanilla
Flavoring purposes Beverage, Dairy, Parsley leaf
Other purposes Confection
Cosmetic purposes Perfuming agents

Safety Information

Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 36/37/38 - Irritating to eyes, respiratory system, and skin.
S 02 - Keep out of the reach of children.
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 36 - Wear suitable protective clothing.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
flavor and fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
Recommendation for para-alpha-dimethyl styrene usage levels up to:
0.1000 % in the fragrance concentrate.
Maximised Survey-derived Daily Intakes (MSDI-EU): 18.00 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.30 (μg/capita/day)
Threshold of Concern:1800 (μg/person/day)
Structure Class: I
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 4
Click here to view publication 4
average usual ppmaverage maximum ppm
baked goods: --
beverages(nonalcoholic): -0.15000
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: --
condiments / relishes: --
confectionery froastings: --
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: --
gelatins / puddings: -1.00000
granulated sugar: --
gravies: --
hard candy: -2.80000
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: --
soups: --
sugar substitutes: --
sweet sauces: --

Safety references

European Food Safety Athority(EFSA):Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...

European Food Safety Authority (EFSA) reference(s):

Flavouring Group Evaluation 78 (FGE.78)[1] - Consideration of Aliphatic and alicyclic and aromatic hydrocarbons evaluated by JECFA (63rd meeting) structurally related to aliphatic and aromatic hydrocarbons evaluated by EFSA in FGE.25 - Scientific Opinion of the Panel on Food Additives,Flavourings, Processing Aids and Materials in Contact with Food (AFC)
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 78, Revision 1 (FGE.78Rev1): Consideration of aliphatic and alicyclic and aromatic hydrocarbons evaluated by JECFA (63rd meeting) structurally related to aliphatic and aromatic hydrocarbons evaluated by EFSA in FGE.25Rev2
View page or View pdf

Scientific Opinion on the safety and efficacy of aliphatic and aromatic hydrocarbons (chemical group 31) when used as flavourings for all animal species
View page or View pdf

Scientific Opinion on Flavouring Group Evaluation 78, Revision 2 (FGE.78Rev2): Consideration of aliphatic and alicyclic and aromatic hydrocarbons evaluated by JECFA (63rd meeting) structurally related to aliphatic hydrocarbons evaluated by EFSA in FGE.25Rev3
View page or View pdf

EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):1195-32-0
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :62385
National Institute of Allergy and Infectious Diseases:Data
WGK Germany:2
1-methyl-4-prop-1-en-2-ylbenzene
Chemidplus:0001195320