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CAS 124-26-5

CAS 124-26-5 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 124-26-5
CAS 124-26-5PubChem CID 31292

Stearic acid amide

Octadecanamide is a fatty amide of stearic acid. It has a role as a metabolite. It is functionally related to an octadecanoic acid. — ChEBI

IUPAC name
octadecanamide
Molecular formula
C18H37NO
Molecular weight
283.5 g/mol
Exact mass
283.287514804 Da
XLogP3
6.8
Topological polar surface area
43.1 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

StearamideOctadecamideOctadecylamideStearylamideKemamide SStearoylamideStearoylamineStearic amide
16 more reported names
Adogen 42NSC 66462CCRIS 6866HSDB 723EINECS 204-693-2YQX129FH1UBRN 0909006CHEBI:34900ORISTAR STAAI3-10003NSC-66462EC 204-693-2STEARIC ACID AMIDE [HSDB]STEARAMIDE (STEARIC ACID AMIDE)204-693-2RefChem:889144
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External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match31292

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

  • Note: This chemical does not meet GHS hazard criteria for 99.1% (220 of 222) of all reports. Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: Not Classified; Reported as not meeting GHS hazard criteria by 220 of 222 companies (only 0.9% companies provided GHS information). For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 222 reports by companies from 4 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 220 of 222 reports by companies.; There are 2 notifications provided by 2 of 222 reports by companies with hazard statement code(s).; 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)
  • Toxicity Summary: IDENTIFICATION AND USE: Stearic acid amide (Stearamide) is a solid. It is used as a corrosion inhibitor in oil wells. It is also used in food packaging, plastic and rubber products. HUMAN STUDIES: There are no data available. ANIMAL STUDIES: Rats (5/sex/dose) were administered stearamide in corn oil via gavage at a dose of 10,000 mg/kg and then observed for 14 days. No mortality was observed. Salmonella typhimurium strains TA98, TA100, TA1535, TA1537 and TA1538 were exposed to stearamide at concentrations of 50, 150, 500, 1500 or 5000 ug/plate in the presence and absence of metabolic activation. Stearamide was not mutagenic in this assay. Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Bioconcentration: An estimated BCF of 510 was calculated in fish for stearic acid amide(SRC), using an estimated log Kow of 6.70(1) and a regression-derived equation(1). According to a classification scheme(2), 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: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 4.6X10+4(SRC), determined from a structure estimation method(2), indicates that stearic acid amide is expected to be immobile in soil(SRC). Volatilization of stearic acid amide from moist soil surfaces is not an important fate process(SRC) given an estimated Henry's Law constant of 1.0X10-6 atm-cu m/mole(SRC), using a fragment constant estimation method(3). Additionally, adsorption to soil is expected to attenuate volatilization(SRC). Stearic acid amide is not expected to volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 6.7X10-7 mm Hg at 25 °C(SRC), determined from a fragment constant method(2). Stearic acid amide reached 62% degradation after 28 days in the CO2 Evolution test(4) indicating that biodegradation in an important environmental fate process in soil(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 4.6X10+4(SRC), determined from a structure estimation method(2), indicates that stearic acid amide is expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 1.0X10-6 atm-cu m/mole(SRC), developed using a fragment constant estimation method(4). According to a classification scheme(5), an estimated BCF of 510(SRC), from an estimated log Kow of 6.70(2) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is high(SRC). Stearic acid amide reached 62% degradation after 28 days in the CO2 Evolution test(6) indicating that biodegradation is an important environmental fate process in water(SRC). 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), stearic acid amide, which has an estimated vapor pressure of 6.7X10-7 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), will exist in both the vapor and particulate phases in the ambient atmosphere. Vapor-phase stearic acid amide 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 14 hours(SRC), calculated from its rate constant of 2.7X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3). Particulate-phase stearic acid amide may be removed from the air by wet and dry deposition(SRC). Stearic acid amide does not contain chromophores that absorb at wavelengths >290 nm(4) and, therefore, is not expected to be susceptible to direct photolysis by sunlight(SRC). 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
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 124-26-5

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How CAS 124-26-5 is used on this site

CAS 124-26-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 124-26-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.