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Alkyl Acetamide

  • Other
  • CAS 866259-61-2
  • IUPAC: Acetamide, 2-hydroxy-, N,N-dicoco alkyl derivatives

Alkyl Acetamide (CAS 866259-61-2) appears in 1 of the 2,179 car-care products CarCareTruth tracks (as of August 2026).

Not on the CA Prop 65 list (checked against CAS 866259-61-2, not found in the OEHHA list). The finished-product SDS (Mopar 8/9-Speed Fluid, version 6.10, issued 2024-06-21) classifies the mixture overall as 'Not Applicable' under GHS/OSHA HazCom — no signal word, no hazard statements — so this additive does not push the mixture into a hazard classification at its disclosed 1-3% concentration.

Alkyl acetamide (CAS 866259-61-2) is a fatty-amide friction-modifier additive used in automatic transmission fluid formulations, including Mopar's factory-fill fluid for the ZF-sourced 8-speed and 9-speed automatics used across the FCA/Stellantis lineup. Friction modifiers of this class are added at low concentration (here, 1-3% by weight per the product SDS) to hold the friction coefficient of clutch packs and torque-converter lockup clutches stable as the fluid moves through its operating temperature range, which is the mechanism behind shudder suppression in modern step-gear automatics.

The finished-product SDS classifies the overall mixture as not meeting the OSHA Hazard Communication Standard's definition of a hazardous chemical, with no GHS signal word or hazard statement assigned at the mixture level. CAS 866259-61-2 does not appear on California's Proposition 65 list.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
no
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Purpose: Fatty amide friction-modifier / lubricity additive in automatic transmission fluid formulations, present at 1-3% by weight per SDS §3. Amide-based friction modifiers help stabilize the friction coefficient of clutch-pack and torque-converter lockup material across the temperature range.

Common questions about Alkyl Acetamide

What is Alkyl Acetamide used for in car care?
Fatty amide friction-modifier / lubricity additive in automatic transmission fluid formulations, present at 1-3% by weight per SDS §3. Amide-based friction modifiers help stabilize the friction coefficient of clutch-pack and torque-converter lockup material across the temperature range.
Is Alkyl Acetamide a VOC?
No. Alkyl Acetamide is not classified as a volatile organic compound (VOC).
Is Alkyl Acetamide on California's Proposition 65 list?
No. Alkyl Acetamide is not on California's Proposition 65 list.

1 product contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.