1,3-Dimethylpentylamine and its salts
1,3-Dimethylpentylamine and its salts is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.
Chemical identity and properties
- IUPAC name
- 4-methylhexan-2-amine
- Molecular formula
- C7H17N
- Molecular weight
- 115.22 g/mol
- Exact mass
- 115.136099547 Da
- XLogP3
- 1.9
- Topological polar surface area
- 26.0 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 1
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
Evidence from additional scientific databases
EMBL-EBI ChEBI
methylhexaneamine
- Formula
- C7H17N
- Average mass
- 115.220 g/mol
- Monoisotopic mass
- 115.13610 Da
- Formal charge
- 0
- alkylamine — is a (CHEBI:13759)
- alkylamine — is a (CHEBI:13759)
Additional curated names
Cross-references from this source
- CAS: 105-41-9 — DrugCentral
- MANUAL_X_REF: 3353 — DrugCentral
Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2017-02-23. Retrieved: 2026-08-31. Open source record
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 132.5 °C Source: Hazardous Substances Data Bank (HSDB)
- Color/Form: Liquid Source: Hazardous Substances Data Bank (HSDB)
- Density: 0.7655 g/cu cm at 20 °C Source: Hazardous Substances Data Bank (HSDB)
- Odor: Amine odor Source: Hazardous Substances Data Bank (HSDB)
- Refractive Index: Index of Refraction: 1.4150 at 25 °C Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Slightly soluble in water; very soluble in ethanol, ether, chloroform and dilute acid Source: Hazardous Substances Data Bank (HSDB)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]; H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]; H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P280, P301+P317, P301+P330+P331, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P319, P321, P330, P363, P370+P378, P403+P233, 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 39 reports by companies from 2 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)
- Environmental Bioconcentration: An estimated BCF of 12 was calculated in fish for 1,3-dimethylamylamine(SRC), using an estimated log Kow of 2.16(1) and a regression-derived equation(1). According to a classification scheme(2), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 200(SRC), determined from a structure estimation method(2), indicates that 1,3-dimethylamylamine is expected to have moderate mobility in soil(SRC). The pKa of 1,3-dimethylamylamine is estimated to be 10.6(SRC) based on analogy to similar amines(3), indicating that this compound will exist primarily in cation form in the environment and cations generally adsorb more strongly to soils containing organic carbon and clay than their neutral counterparts(4). Volatilization of 1,3-dimethylamylamine from moist soil surfaces may occur(SRC) given an estimated Henry's Law constant of 4.2X10-5 atm-cu m/mole(SRC), using a fragment constant estimation method(2). 1,3-Dimethylamylamine is expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 8.9 mm Hg at 25 °C(SRC), determined from a fragment constant method(2). Environmental biodegradation data specific to 1,3-dimethylamylamine were not available(SRC, 2014). However, similar aliphatic amines (such as amylamine and sec-butylamine) have been classified as readily biodegradable using the Japanese MITI test where these aliphatic am Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 200(SRC), determined from a structure estimation method(2), indicates that 1,3-dimethylamylamine may have moderate adsorption to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon an estimated Henry's Law constant of 4.2X10-5 atm-cu m/mole(SRC), developed using a fragment constant estimation method(2). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 1.1 and 11.1 days, respectively(SRC). According to a classification scheme(4), an estimated BCF of 12(SRC), from an estimated log Kow of 2.16(2) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is low. 1,3-Dimethylamylamine is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions(3). Environmental biodegradation data specific to 1,3-dimethylamylamine were not available(SRC, 2014). However, similar aliphatic amines (such as amylamine and sec-butylamine) have been classified as readily biodegradable using the 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), 1,3-dimethylamylamine, which has an estimated vapor pressure of 8.9 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase 1,3-dimethylamylamine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be about 8 hours(SRC), calculated from its rate constant of 4.9X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(2). 1,3-Dimethylamylamine does not contain chromophores that absorb at wavelengths >290 nm(3) and, therefore, is not expected to be susceptible to direct photolysis by sunlight(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Uses: DMAA (1,3-dimethylamylamine) is an amphetamine derivative that has been widely used in sports supplements sold in the United States. Also known as methylhexanamine or geranium extract, DMAA is often touted as a "natural" stimulant, with many claimed functional uses including a body-building aid, an athletic performance enhancer, and a weight-loss aid. Although DMAA at one time was approved as a drug for nasal decongestion, no medical use of DMAA is recognized today. FDA is not aware of any reliable science indicating that DMAA exists naturally in plants. Source: Hazardous Substances Data Bank (HSDB)
- Uses: THERAPEUTIC CATEGORY: Adrenergic Source: Hazardous Substances Data Bank (HSDB)
- Uses: /Former Use/ MEDICATION Source: Hazardous Substances Data Bank (HSDB)
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
| Source | Result | Checked |
|---|---|---|
| EMBL-EBI ChEBI | Exact match | 2026-08-31 |
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
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.
Record details
Chemical name
1,3-Dimethylpentylamine and its salts
Regulatory information
Key data
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What Annex II means for 1,3-Dimethylpentylamine and its salts
1,3-Dimethylpentylamine and its salts is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.
Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.
The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Verify this substance is absent from all raw materials and finished formulations.
- Request absence confirmation or CoA from raw material suppliers.
- Document the screening result in the Product Information File (PIF).
Frequently asked questions
Source note for Annex II record 1,3-Dimethylpentylamine and its salts
This page summarizes one Annex II record for 1,3-Dimethylpentylamine and its salts from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex II conditions for 1,3-Dimethylpentylamine and its salts, but confirm any final regulatory decision against the current official annex wording and source files.
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