Agent Name

Neodecanoic acid

CAS Number




Major Category

Other Classes


Topper 5E; Wiltz 65; [ChemIDplus] Neo Acids C10; Neo decanoic acid prime; [IUCLID]


Organic Acids


Colorless liquid; [CAMEO]


A mixture of di- substituted saturated decanoic acids; Used as a pre-harvest desiccant for onion foliage; [ChemIDplus] Used as an intermediate in the chemical industry; [IUCLID] Permitted for use as an inert ingredient in non-food pesticide products; [EPA] "Neodecanoic acid is a mixture of carboxylic acids with the common structural formula C10H20O2, a molecular weight of 172.26 g/mol, and the CAS number 26896-20-8. . . . Neodecanoic acid is used primarily as an intermediate to make other chemical products. For example, metal salts of neodecanoic acid can be used in a variety of applications such as paint driers, polyvinylchloride stabilizers, or polymerization initiators. Ester derivatives of neodecanoic acid are used in surface coatings and cement additives. In its neutralized form, neodecanoic acid is used in metalworking fluids." [Wikipedia]


Causes eye but not skin irritation in rabbits; Not a skin sensitizer in guinea pigs; Changes in blood chemistry and histopathological changes of the thyroid, liver, and kidney observed in 3-month oral study of rats; No adverse effects observed in 3-generation study of rats at doses up to 1,500 ppm dietary; [IUCLID] A moderate skin and eye irritant in rabbits; [EPA ChAMP: Hazard Characterization] Causes severe skin irritation and serious eye injury; Brief contact can causes second- and third-degree skin burns; Vapors or mist causes severe eye and throat irritation and may cause injury to the eye and lung; [CHRIS] May cause irritation; [ExxonMobil MSDS]

Exposure Assessment
Vapor Pressure

0.007 mm Hg

Lethal Concentration

LC50 (rat) > 3,000 mg/m3/6hr

Adverse Effects
Toxic Pneumonitis



Skin Burns

Links to Other NLM Databases
Toxicity Information


Chemical Information

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Related Information in HazMap

Industrial Processes with risk of exposure: