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CAS 123-35-3

CAS 123-35-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 123-35-3
CAS 123-35-3PubChem CID 31253

Myrcene

Beta-myrcene is a monoterpene that is octa-1,6-diene bearing methylene and methyl substituents at positions 3 and 7 respectively. It has a role as a volatile oil component, a flavouring agent, an anabolic agent, a fragrance, an anti-inflammatory agent and a plant metabolite. — ChEBI

IUPAC name
7-methyl-3-methylideneocta-1,6-diene
Molecular formula
C10H16
Molecular weight
136.23 g/mol
Exact mass
136.125200510 Da
XLogP3
4.3
Topological polar surface area
0.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
0
Covalent units
1
Defined stereocentres
0

Also known as

beta-Myrcene7-Methyl-3-methylene-1,6-octadiene1,6-Octadiene, 7-methyl-3-methylene-beta-geraniolene3-Methylene-7-methyl-1,6-octadieneFEMA No. 2762NSC-4062643M39CZS25B
16 more reported names
CHEBI:17221RefChem:6044204-622-52-methyl-6-methylene-1,7-octadiene7-Methyl-3-methyleneocta-1,6-diene.beta.-Myrcene2-Methyl-6-methylene-2,7-octadieneb-Myrcene.beta.-Geranioleneb-Geraniolene7-Methyl-3-methylene-octa-1,6-dieneNSC 406264b-Myrcene (>90%)Myrcene (stabilized with BHT)7-Methyl-3-methyleneoctadiene-(1,6)Methyl 5(Z),8(Z),11(Z),14(Z),17(Z),20(Z)-Tricosahexaenoate
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match31253

Attributed physical-property, hazard, environmental and use annotations.

  • First Aid: INHALATION: Call for medical aid. Remove the victim to fresh air. If not breathing give artificial respiration. If breathing is difficult give oxygen.; SKIN: Wash with soap and copious amounts of water.; EYES: Immediately flush with copious amounts of water. Insure adequate flushing of the eyes by holding the eyelids open with the fingers. (USCG, 1999) Source: CAMEO Chemicals
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H226 (99.8%): Flammable liquid and vapor [Warning Flammable liquids]; H304 (99%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]; H315 (85.6%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (85.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H400 (14.6%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H412 (18.7%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P264, P264+P265, P273, P280, P301+P316, P302+P352, P303+P361+P353, P305+P351+P338, P321, P331, P332+P317, P337+P317, P362+P364, P370+P378, P391, P403+P235, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 2180 reports by companies from 35 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: NITE-CMC
  • GHS Hazard Statements: H226: Flammable liquid and vapor [Warning Flammable liquids]; H315: Causes skin irritation [Warning Skin corrosion/irritation]; H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H351: Suspected of causing cancer [Warning Carcinogenicity]; H360: May damage fertility or the unborn child [Danger Reproductive toxicity]; H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard] Source: NITE-CMC
  • Precautionary Statement Codes: P203, P210, P233, P240, P241, P242, P243, P264, P264+P265, P273, P280, P302+P352, P303+P361+P353, P305+P351+P338, P318, P321, P332+P317, P337+P317, P362+P364, P370+P378, P391, P403+P235, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • Signal: Warning Source: NITE-CMC
  • GHS Hazard Statements: H226: Flammable liquid and vapor [Warning Flammable liquids]; H315: Causes skin irritation [Warning Skin corrosion/irritation]; H351: Suspected of causing cancer [Warning Carcinogenicity]; H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity] Source: NITE-CMC
  • Precautionary Statement Codes: P203, P210, P233, P240, P241, P242, P243, P264, P280, P302+P352, P303+P361+P353, P318, P321, P332+P317, P362+P364, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • Environmental Bioconcentration: An estimated BCF of 334 was calculated in fish for myrcene(SRC), using a log Kow of 4.33(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is high(SRC), provided the compound is not metabolized by the organism(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: THE INFLUENCE OF LIGHT & TEMP ON MONOTERPENE EMISSIONS FROM SLASH PINE WERE ASSESSED. QUANT PRESENT IN VAPOR PHASE WERE SUFFICIENT TO MEASURE RELIABLY. Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 1074(SRC), determined from a structure estimation method(2), indicates that myrcene is expected to have low mobility in soil(SRC). Volatilization of myrcene from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 0.0916 atm-cu m/mole(SRC), derived from its vapor pressure, 2.09 mm Hg(3), and water solubility, 4.09 mg/L(4). However, adsorption to soil may attenuate volatilization(SRC). Myrcene is expected to volatilize from dry soil surfaces(SRC) based upon the vapor pressure of 2.09 mm Hg at 25 °C(3). Myrcene, present at 100 mg/L, reached 82-92% of its theoretical BOD in 2 weeks using an activated sludge inoculum at 30 mg/L and the Japanese MITI test(5) which classifies the compound as readily biodegradable. Monoterpene compounds similar in structure to myrcene (limonene, pinene, terpinene, terpinolene) were readily degraded in aerobic batch experiments using forest soil(6). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 1074(SRC), determined from a structure estimation method(2), indicates that myrcene is expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon an estimated Henry's Law constant of 0.0916 atm-cu m/mole(SRC), derived from its vapor pressure, 2.09 mm Hg(4), and water solubility, 4.09 mg/L(5). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 3.4 hours and 4.6 days, respectively(SRC). According to a classification scheme(6), an estimated BCF of 334(SRC), from its log Kow of 4.33(7) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is high(SRC), provided the compound is not metabolized by the organism(SRC). Myrcene is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(3). Myrcene, present at 100 mg/L, reached 82-92% of its theoretical BOD in 2 weeks using an activated sludge inoculum at 30 mg/L and the Japanese MITI test(8) which classifies Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), myrcene, which has a vapor pressure of 2.09 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase myrcene is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals, ozone and nitrate radicals(SRC); the half-life for the reaction with hydroxyl radicals is estimated to be 1.8 hrs(SRC), calculated from its rate constant of 2.15X10-10 cu cm/molecule-sec at 25 °C(3); the half-life for the reaction with ozone is estimated to be 34 minutes(SRC), calculated from its rate constant of 4.90X10-16 cu cm/molecule-sec(4); the half-life for the reaction with nitrate radicals in nighttime air is estimated to be 4 minutes(SRC), calculated from its rate constant of 1.10X10-11 cu cm/molecule-sec(4). Hydroxyl radical and ozone oxidation of myrcene in the ambient atmosphere yields acetone, formaldehyde and formic acid as degradation products(5). Myrcene does not contain chromophores that absorb at wavelengths >290 nm(6), and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Sources/Uses: Beta-myrcene: Found in oil of bay, verbena, hops, and other natural sources; Alpha-myrcene: Not found in nature; [Merck Index] Used as a fragrance, flavoring agent, insect repellent, and detergent additive; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Uses: ... Myrcene is the starting material for a range of industrially important products, e.g., geraniol, nerol, linalool, and isophytol. ... Besides its main use as an intermediate for the production of terpene alcohols, myrcene is used in the production of terpene polymers, terpene-phenol resins, and terpene-maleate resins. It can also be used as a solvent or diluting agent for dyes and varnishes. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Preparation of perfume chemicals and flavoring. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: INSECT REPELLENT Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Detergents Source: Hazardous Substances Data Bank (HSDB)
  • Uses: For more Uses (Complete) data for MYRCENE (6 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Perfume chemicals and flavoring. Myrcene is the major constituent of oil of bay and hop which are used in the manufacture of alcoholic beverages. Myrcene is also present in lemon grass (Cymbopogon citratus), a plant widely used in Brazilian folk medicine. Recently, it was shown that myrcene is a very potent analgesic substance and might be an alternative to the already available analgesic drugs (T39, A2447). Source: Toxin and Toxin Target Database (T3DB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 123-35-3

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