gamma-terpinene

Material Search

1-methyl-4-propan-2-ylcyclohexa-1,4-diene

Identifiers

CAS (Single)	99-85-4
FEMA	3559
EINECS	202-794-6
Synonyms	crithmene 1,4- cyclohexadiene, 1-methyl-4-(1-methylethyl)- 1,4- cyclohexadiene, 1-methyl-4-isopropyl- p- mentha-1,4-diene para- mentha-1,4-diene 1,4-p- menthadiene 1,4-para- menthadiene 4- methyl-1-(1-methylethyl)-1,4-cyclohexadiene 1- methyl-4-(1-methyl ethyl)-1,4-cyclohexadiene 1- methyl-4-(1-methylethyl)-1,4-cyclohexadiene 1- methyl-4-(propan-2-yl)cyclohexa-1,4-diene 1- methyl-4-isopropyl-1,4-cyclohexadiene 1- methyl-4-propan-2-ylcyclohexa-1,4-diene moslene 4-iso propyl-1-methyl-1,4-cyclohexadiene 1-iso propyl-4-methyl-1,4-cyclohexadiene 1-iso propyl-4-methylcyclohexa-1,4-diene g- terpinene gamma- terpinene 60% ex lemon natural gamma- terpinene 70% ex lemon natural terpinene gamma natural gamma- terpinene natural gamma- terpinene P&F
JECFA Food Flavoring	1340
JECFA Food Additive	N/A
DG SANTE Food Flavourings	01.020 gamma-terpinene
DG SANTE Food Contact Materials	N/A
FDA UNII	4YGF4PQP49
CoE Number	11025
XlogP3-AA	N/A
Molecular Weight	136.23752
Molecular Formula	C10 H16

Properties

Food Chemicals Codex Listed	Yes
Appearance	colorless clear oily liquid (est)
Assay	95.00 to 100.00
Specific Gravity	0.84600 to 0.84900 @ 25.00 °C.
Lbs/Gal (est)	7.040 to 7.065
Refractive Index	1.47300 to 1.47700 @ 20.00 Â°C.
Melting Point	-10.00 Â°C. @ 760.00 mm Hg
Boiling Point	181.00 to 183.00 Â°C. @ 760.00 mm Hg
Flash Point	125.00 Â°F. TCC ( 51.67 Â°C. )
Acid Value	N/A
Vapor Pressure	1.075000 mmHg @ 25.00 Â°C. (est)
Vapor Density	4.7 ( Air = 1 )
logP (o/w)	4.5
Soluble In	alcohol fixed oils water, 8.68 mg/L @ 22 °C (exp) water alcoholic fine fragrance, fair antiperspirant, fair fabric softener, poor hypochlorite bleach, poor liquid detergent, poor perborate powder detergent, poor soap, fair toiletry application, fair
Occurrence	achillea tenuifolia lam. flower oil iran @ 0.20% agathosma crenulata oil @ 0.09% ajowan seed oil turkey @ 11.86% allspice fruit allspice leaf allspice leaf oil allspice seed amomum testaceum ridl. fruit oil malaysia @ 0.20% angelica root oil @ 3.07% angelica seed oil CO2 extract @ 0.20% anise seed oil star china @ 0.30% anise star anise fruit armoise oil morocco @ 1.5% artemisia campestris spp. glutinosa flower oil italy @ 0.40% artemisia santolina schrenk oil iran @ 0.90% artemisia variabilis flower oil italy @ 3.20% basil leaf oil basil oil sweet poland @ 0.15% basil oil var. glabratum turkey @ trace% basil plant bay laurel leaf bay laurel leaf oil bay leaf oil @ <0.01-0.16% bay leaf oil anise @ 0.1% bergamot oil @ 11.0% bergamot oil @ 5.266-11.151% bergamot oil turkey @ 4.12% bergamot plant wild betel leaf oil @ 1.60% blood orange oil (citrus sinensis l. var. sanguinello) italy @ 0.006% blood orange oil (citrus sinensis l. var. tarocco) italy @ 0.003% blood orange oil italy @ 0.007% buchu leaf oil @ 0.34% cabbage shoot cajuput oil @ 0.2% cajuput oil vietnam @ 4.6% calamintha nepeta (l.) savi subsp. glandulosa oil greece @ trace% calamus leaf oil @ 0.05% cananga fruit oil @ 5.6% cananga odorata oil java @ 0.07% caraway plant caraway seed cardamom fruit cardamom root oil carrot root carrot seed oil @ 0.36% carrot seed oil spain @ 0.02-0.52% cascarilla bark oil @ 0.60% cassia plant cassis bud oil @ trace-1.80% cedarleaf oil canada @ 0.32-0.53% cedarwood oil lebanon @ >0.10% celery leaf oil celery seed chamomile oil morocco @ 0.10% chenopodium ambrosioides oil @ 0.1% cinnamomum fragrans baillon leaf oil madagascar @ 0.50% cinnamomum fragrans baillon leaf oil madagascar @ 2.20% cinnamon ceylon cinnamon bark cinnamon ceylon cinnamon leaf cinnamon ceylon cinnamon root bark cinnamon ceylon cinnamon stem bark cinnamon oil CO2 extract @ 0.01-0.03% clary sage oil sardinia @ 0.90% clary sage oil spain @ trace% coriander coriander fruit coriander oil coriander seed oil coriander seed oil @ 4.50% coriander seed oil cuba @ 4.08% cornmint leaf cornmint oil crithmum maritimum l. oil turkey @ 19.30% croton cajucara benth. leaf oil brazil @ trace% croton flavens l. (welensali) leaf oil curacao @ 0.20% cubeb oil @ 1.14% cumin cumin oil cumin seed cumin seed oil cumin seed oil egypt @ 19.12% cumin seed oil turkey @ 29.1% curcuma mangga curry fruit oil india @ 3.00% curry leaf oil india @ 0.20% cypress cone oil egypt @ 0.8% cypress oil @ 0.41-0.51% dill leaf dill seed dill weed oil reunion @ trace% echinophora cinerea oil iran @ 0.30% eucalyptus camaldulensis dehn. leaf oil jerusalem @ 1.30% eucalyptus camaldulensis dehnh. leaf oil ethiopia @ 0.60% eucalyptus deaneti maiden leaf oil ethiopia @ 2.10% eucalyptus delegatensis r. baker leaf oil ethiopia @ 18.00% eucalyptus globulus bicostata oil @ 0.15% eucalyptus globulus bud oil @ trace% eucalyptus globulus fruit oil @ 0.18% eucalyptus globulus oil @ 0.17% eucalyptus globulus oil pakistan @ 1.20% eucalyptus globulus oil rwanda @ 3.20% eucalyptus globulus oil zambia @ 0.50% eucalyptus grandis w. hill ex maiden leaf oil ethiopia @ 0.30% eucalyptus nitens (deane et maiden) maiden leaf oil ethiopia @ 0.10% eucalyptus saligna smith leaf oil ethiopia @ 0.90% eucalyptus tereticornis smith leaf oil ethiopia @ 1.00% eucalyptus urophylla s.t. blake leaf oil ethiopia @ 0.20% featherfew leaf oil @ 1.87% fennel absolute sweet @ 0.20% fennel flower oil bitter lithuania @ 0.81% fennel oil fennel plant fennel seed fennel seed oil fennel seed oil bitter spain @ 0.40% ferula cupularis flower oil @ 2.19% feverfew flower oil @ 0.1% feverfew leaf oil belgium @ 1.0% fir needle oil canada @ 0.06-0.31% fir needle oil siberia @ 0.14% foeniculum vulgare piperitum oil @ 5.10% frankincense oil somalia @ 0.10% galangal root oil @ 0.22% ginger rhizome ginger rhizome oil glycosmis pentaphylla (cor.) seed oil india @ 0.60% grapefruit grapefruit juice grapefruit oil c.p. @ 0.01% grapefruit oil c.p. @ 0.07% grapefruit oil c.p. @ 0.08% grapefruit oil c.p. italy @ 0.02% grapefruit oil c.p. russia @ 0.10% grapefruit oil c.p. russia @ 0.12% grapefruit oil c.p. russia @ 0.16% grapefruit oil c.p. russia @ 15.41% grapefruit oil CO2 extract @ 0.74% guava leaf oil cuba @ trace% heracleum candolleanum rhizome oil india @ 4.60% heracleum paphlagonicum czeczott fruit oil turkey @ 0.30% herniaria incana lam. oil greece @ trace% hinoki leaf oil @ 1.77% hinoki root oil @ 0.45% hinoki wood oil @ 0.15% ho leaf oil @ 0.30% horsemint shoot hypericum dogonbadanicum assadi oil iran @ 0.60% hyptis spicigera lam. oil mali @ trace-0.20% hyptis suaveolens (l.) poit. oil mali @ 1.00-2.10% hyssop leaf juniper berry oil CO2 extract @ 6.90% juniper branch oil @ 1.80% juniper needle oil @ 3.00% kewda oil @ 0.28-0.76% labdanum leaf oil @ 0.40% labdanum oil @ 0.35% laurel bark oil @ 0.3% laurel berry oil @ 0.8% laurel leaf oil turkey @ 1.80% laurel stem oil @ 0.2% laurel wood oil @ 0.1% lavandin oil abrialis @ 0.26% lavandin oil grosso @ 0.40% lavandin water (lavandula hydrida) @ 0.05% lavender oil france @ 0.07% lavender oil greece @ 0.07% lavender oil spike france @ 0.15% lavender spike water @ 0.02% layana oil kenya @ 1.64% layana oil wild zimbabwe @ 0.30-1.90% layana oil zimbabwe @ 0.7% lemon fruit juice lemon leaf oil lemon oil lemon oil california @ 8.32% lemon oil expressed italy @ 10.56% lemon pericarp lemon pericarp oil lemon petiole lemon verbena oil morocco @ 1.0% lemon verbena oil turkey @ 0.08% lemongrass oil @ 0.04% levisticum officinale flower oil @ 1.87% levisticum officinale seed oil @ 0.39% lime fruit lime oil CO2 extract mexico @ 2.46% lime oil distilled mexico @ 11.02% lime oil distilled peru @ 13.35% lime oil expressed florida @ 17.0% lime peel lippia aff. gracillis h.b.k. leaf oil brazil @ 10.60% lovage flower oil @ 1.40% lovage leaf oil @ 2.60% lovage root lovage root oil @ 0.74% lovage seed oil @ 2.11% mace oil @ 6.60% mace oil CO2 extract @ 1.20% mace oil east india @ 1.83% mandarin fruit mandarin leaf oil mandarin oil @ 19.17% mandarin oil avana @ 16.68% mandarin oil avana @ 17.17% mandarin oil italy @ 19.17% mandarin oil italy @ 19.85% mandarin oil japan @ 4.60% mandarin oil uruguay @ 0.01-0.02% manuka var. eximium oil australia @ 0.10% manuka var. rotundifolium oil australia @ 0.30% manuka var. scoparium oil new zealand @ 0.16% marjoram leaf marjoram leaf oil marjoram oil marjoram oil @ 2.20% marjoram oil spain @ 0.10% marjoram oil sweet cuba @ 8.34% marjoram oil sweet cyprus @ 8.30-11.10% marjoram oil sweet iran @ 8.80% marjoram oil sweet morocco @ 1.21% marjoram oil sweet turkey @ 3.72-4.84% marjoram pot oil turkey @ 1.83-16.32% mastic fruit oil @ 0.02% mastic leaf oil @ 0.07% mastic oil @ 0.01% mayur pankh fruit oil himalaya @ 1.10% melissa oil @ 0.40% mentha longifolia (l.) huds. oil jordan @ 0.10% michelia alba flower absolute @ 0.01% microstrobos fitzgeraldii leaf oil australia @ 0.20% microstrobos niphophilus leaf oil australia @ 0.70% mikan peel oil @ 4.80% mint myristica fragrans fruit oil @ 3.90% myrrhinium atropurpureum schott leaf oil brazil @ 0.80% myrtle lemon scented leaf oil australia @ 0.30% myrtle oil @ 0.15% narcissus absolute @ 10.29% narcissus absolute @ 27.21% nepeta denudata benth. oil iran @ 0.80% neroli oil CO2 extract @ 0.06% niaouli oil egypt @ 1.00% nutmeg extract CO2 west indian @ 0.80% nutmeg flower oil @ 4.63% nutmeg leaf oil @ 1.80-5.96% nutmeg oil nutmeg oil hydrodistilled india @ 3.9% nutmeg oil india @ 1.80% nutmeg seed nutmeg seed oil ocimum gratissimum l. oil brazil @ 0.07% ocimun viride orange fruit orange fruit juice orange oil c.p. brazil @ trace-0.02% orange peel oil orange peel oil bitter brazil @ 0.07% orange peel oil bitter china @ 4.25% orange peel oil bitter italy @ 0.02% orange peel oil sweet c.p. blond italy @ 0.004% orange peel oil sweet c.p. blond italy @ 0.005% orange peel oil sweet c.p. blond italy @ 0.006% orange peel oil sweet c.p. blond italy @ 0.007% orange peel oil sweet c.p. blond italy @ 0.017% oregano oil oregano oil mexico @ 0.54% oregano plant oregano plant oregano shoot oregano shoot oil origanum oil greece @ 6.43% orthodon dianthera maxim. oil vietnam @ 0.10% osmanthus absolute @ 0.20% palmarosa oil @ trace% papaya fruit parsley fruit oil parsley leaf parsley leaf oil @ 0.09% parsley leaf oil cuba @ 0.03% parsley seed parsley seed oil parsley seed oil @ 0.10% parsnip root pepper bell pepper fruit pepper black pepper fruit pepper black pepper fruit oil pepper black pepper seed oil pepper oil black india @ 0.50% peppermint leaf peppermint oil america @ 0.68% petitgrain bigarade oil @ 1.60% petitgrain combava oil @ 0.07% petitgrain grapefruit oil @ 12.00% petitgrain lemon oil @ 0.79% petitgrain lime oil @ 0.30% petitgrain oil @ 0.10% petitgrain sweet oil @ 0.11% peucedanum petiolare (dc) boiss oil iran @ 0.10% phoebe oil brazil @ 0.03% pimenta leaf oil @ 0.56% pimenta racemosa leaf oil lemon @ 0.04% pimento berry oil @ 1.1% pimento berry oil CO2 extract jamaica @ trace% pine needle oil dwarf @ 0.23% pine needle oil scotch siberia @ 0.9-1.2% pinus spp. pinus sylvestris l. needle oil estonia @ 0.30% pinus sylvestris l. needle oil yugoslavia @ 0.20% plectranthus glandulosus hook f. leaf oil cameroon @ 0.20% prangos uechtritzii boiss. et hausskn. fruit oil turkey @ 7.00% prangos uloptera dc. oil iran @ 2.10% ravintsara leaf oil @ 2.15%% rosemary leaf rosemary leaf oil rosemary oil corsica @ 1.90% rosemary oil egypt @ 0.26% rosemary oil france @ 0.28-1.28% rosemary oil morocco @ 0.93-1.19% rosemary oil spain @ 10.8% rosemary oil turkey @ 1.52% rosemary plant rosemary sap rosemary shoot rosemary shoot oil saffron stigma sage clary sage sage leaf sage leaf oil sage oil albania @ 0.50% sage oil cuba @ 0.29% sage oil dalmatian @ 0.16% sage oil dalmatian @ 0.20% sage oil dalmatian @ 0.50% sage oil england @ 0.10% sage oil germany @ 0.20% sage oil hydrodistillation france @ 0.20% sage oil reunion @ 0.30% sage oil sardinia @ 0.20% sage oil spain @ 0.0-0.7% sage oil spain @ 0.1% sage oil spain @ 0.30% sage plant salvia atropatana bunge oil iran @ 0.10% salvia lavandulifolia vahl. leaf oil spain @ 1.10% salvia officinalis oil cuba @ 0.29% salvia officinalis oil reunion @ 0.32% santolina oil @ 1.35% satureja khuzistanica jamzad oil iran @ 18.90% satureja viminea l. oil costa rica @ trace% savin savin oil @ 1.30% savory oil summer @ 47.23-53.22% savory oil winter @ 10.80% savory oleoresin winter @ 10.80% savory summer savory plant savory winter savory oil savory winter savory plant snake root oil canada @ 0.80% spearmint oil spearmint oil america @ 0.07-0.14% stachys recta l. oil serbia @ 0.30% star fruit oil cuba @ trace% sugandha kokila berry oil @ 0.60% tagete oil CO2 extract @ 0.26% tagete oil rwanda @ trace% tagete oil turkey @ 0.05% tanacetum annum l. oil marocco @ 1.50% tangerine oil america @ 1.96% tansy flower oil canada @ 0.37% tansy flower oil dutch @ trace% tansy leaf oil dutch @ 0.30% tansy oil argentina @ 0.25% tansy oil canada @ 0.30% tansy oil marocco @ 0.40% tarragon oil tarragon shoot tea tree oil australia @ 21.15% thevetia peruviana (pers.) k. schum. flower oil brazil @ 2.00% thyme absolute @ 2.45% thyme oil thyme oil portuguese @ 15.0% thyme oil red CO2 extract @ 0.67% thyme oil red CO2 extract spain @ 25.0% thyme oil red india @ 14.5% thyme oil red spain @ 12.06-12.27% thyme oil spain @ 0.36% thyme oil spain @ 10.95% thyme oil wild or creeping canada @ 0.50% thyme oil wild or creeping pakistan @ 1.66% thyme plant thymus richardii pers. subsp. nitidus (guss.) jalas oil italy @ trace% trachyspermum roxburghianum benth. ex. kurz. seed oil india @ 6.70% turmeric leaf turmeric oil china @ 2.72% turmeric rhizome valerian root oil @ trace-0.2% vassoura oil @ 0.10% water mint shoot wormseed wormseed oil america @ 0.58% wormseed oil spain @ 0.03% wormwood oil america @ 0.41% wormwood oil annus france @ 0.07-0.34% wormwood oil cuba @ 2.08% wormwood oil italy @ 0.6% yarrow leaf oil @ 1.80% yarrow oil @ 0.60% yarrow oil greece @ 0.30% yuzu leaf oil @ 13.62-18.46% yuzu peel oil c.p. @ 7.59-7.78% yuzu peel oil CO2 extract @ 7.43-10.49% zanthoxylum bracchyacanthum l. leaf oil australia @ 0.10%

Organoleptic

Organoleptic Notes	1. Odor Type: terpenic Odor Strength:medium ,recommend smelling in a 10.00 % solution or less Substantivity:4 hour(s) at 100.00 % oily woody terpenic lemon lime tropical herbal Odor Description:at 10.00 % in dipropylene glycol. oily woody terpene lemon/lime tropical herbalLuebke, William tgsc, (1989) Odor sample from: SCM Glidco Organics terpenic sweet citrus tropical lime Odor Description:Terpy, sweet, citrus, with tropical and lime nuancesMosciano, Gerard P&F 18, No. 1, 43, (1993)
Odor	terpenic oily, woody, terpenic, lemon, lime, tropical, herbal, sweet, citrus
Flavor	terpenic terpenic, citrus, lime, oily, green, tropical, fruity,

AInsights BETA

FlavScents AInsights Entry for Gamma-Terpinene (CAS: 99-85-4)

1. Identity & Chemical Information

Gamma-terpinene is a monoterpene hydrocarbon commonly found in various essential oils. Its IUPAC name is 1-methyl-4-(propan-2-yl)cyclohexa-1,4-diene. The CAS number for gamma-terpinene is 99-85-4. It is also identified by FEMA number 3559. The molecular formula is C10H16, and it has a molecular weight of 136.24 g/mol. Gamma-terpinene contains a cyclohexadiene ring with isopropyl and methyl groups, which contribute to its characteristic odor profile.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Gamma-terpinene is characterized by a fresh, citrusy, and slightly spicy aroma. It is often described as having a lemon-like scent with a hint of herbal undertones. The intensity of its odor is moderate, making it suitable as a background note in formulations. While specific taste and odor thresholds are not well-documented, gamma-terpinene is typically used to impart a fresh and clean character to both flavors and fragrances.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Gamma-terpinene is naturally present in a variety of essential oils, including those from cumin, coriander, and marjoram. It is formed through the enzymatic conversion of geranyl pyrophosphate in plants. Its presence in natural sources qualifies it for use in products labeled as containing "natural flavors" or "natural fragrances."

Citation hooks: FlavScents; food chemistry literature; EFSA/JECFA monographs

4. Use in Flavors

Gamma-terpinene is used in flavor formulations to provide a citrusy and fresh note. It is commonly found in citrus-flavored beverages, confectionery, and savory products. Typical use levels in food and beverages range from 1 to 20 ppm, with higher concentrations used in more robust flavor profiles. It is relatively stable under normal processing conditions but may degrade under prolonged exposure to heat and light.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

In the fragrance industry, gamma-terpinene is utilized in citrus and herbal fragrance families. It serves as a modifier and impact note, enhancing the freshness and vibrancy of the scent. Typical concentration ranges in fragrance formulations are from 0.1% to 1%. Due to its volatility, gamma-terpinene contributes primarily to the top notes of a fragrance composition.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

6. Regulatory Status (Regional Overview)

In the United States, gamma-terpinene is recognized as GRAS (Generally Recognized As Safe) by FEMA for flavor use. In the European Union, it is included in the list of flavoring substances under Regulation (EC) No 1334/2008. The UK follows similar regulations post-Brexit. In Asia, gamma-terpinene is accepted in Japan and China under their respective food safety standards. In Latin America, countries like Brazil and members of MERCOSUR have harmonized regulations that permit its use in flavors and fragrances.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

Gamma-terpinene is considered safe for use in food and fragrance applications at typical exposure levels. For oral exposure, it has a high margin of safety with no specific ADI established. Dermal exposure in fragrances is generally well-tolerated, with low potential for irritation or sensitization. Inhalation exposure is minimal due to its rapid volatilization. Overall, the risk profiles for food and fragrance applications are similar, with no significant safety concerns reported.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Gamma-terpinene is valued for its ability to impart a fresh and clean citrus note. It synergizes well with other citrus and herbal components, enhancing the overall freshness of the formulation. Formulators should be cautious of its volatility and potential for oxidation, which can lead to off-notes. It is often under-utilized in complex formulations where its subtlety can be overshadowed by more dominant notes.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on gamma-terpinene is well-established, with comprehensive sensory and regulatory information available. Industry practices are well-documented, although specific sensory thresholds are less frequently reported. There are no significant data gaps or regulatory ambiguities identified for this compound.

Citation hooks: FlavScents

QA Check

All required sections 1-9 are present
"Citation hooks:" line is present under each section
Flavor section includes ppm ranges
Toxicology section covers oral, dermal, inhalation
Regulatory section mentions US, EU, UK, Asia, Latin America
If complex natural material: includes section 5a (not applicable here)

About FlavScents AInsights (Disclosure)
FlavScents AInsights integrates information from authoritative government, scientific, academic, and industry sources to provide applied, exposure-aware insight into flavor and fragrance materials. Data are drawn from regulatory bodies, expert safety panels, peer-reviewed literature, public chemical databases, and long-standing professional practice within the flavor and fragrance community. Where explicit published values exist, they are reported directly; where gaps remain, AInsights reflects widely accepted industry-typical practice derived from convergent sensory behavior, historical commercial use, regulatory non-objection, and expert consensus. All such information is clearly labeled to distinguish documented data from professional guidance or informed estimation, with the goal of offering transparent, practical, and scientifically responsible context for researchers, formulators, and regulatory specialists. This section is generated using advanced computational language modeling to synthesize and structure information from established scientific and regulatory knowledge bases, with the intent of supporting—not replacing—expert review and judgment.

Generated 2026-09-02 19:07:52 GMT (p2)

Suppliers

	Advanced Biotech GAMMA TERPINENE NATURAL • 1528 Supplier Detail
	Vigon International TERPINENE GAMMA NATURAL • 500386 Supplier Detail
	Axxence Corporation NATURAL GAMMA-TERPINENE • 355910 Supplier Detail
	Penta Fine Ingredients GAMMA-TERPINENE • 20-06300 Supplier Detail
	Penta Fine Ingredients NATURAL GAMMA - TERPINENE • 20-06325 Supplier Detail