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CarCareTruth

Methyl Soyate (Soy Methyl Esters)

  • Esters
  • CAS 67784-80-9
  • IUPAC: Fatty acids, soya, methyl esters

Methyl Soyate (Soy Methyl Esters) (CAS 67784-80-9) appears in 3 of the 2,122 car-care products CarCareTruth tracks (as of August 2026). It is readily biodegradable.

Not GHS-classified (no H-codes per Section 2). No skin sensitization, no reproductive or carcinogenic concerns documented. Safe for typical detailing exposure in low-percentage formulations.

Methyl soyate (also listed as fatty acids, soya, methyl esters or soybean oil methyl ester) is a bio-based solvent produced by transesterifying soybean oil with methanol. It's used in cleaning products as a replacement for petroleum-derived solvents and in detailing chemistry as a mild emollient and slip enhancer.

At the 1–5% range typical of waterless wash and rinseless wash formulas, methyl soyate carries no GHS hazard classification and is readily biodegradable. It contributes to the lubricity that makes paint-safe wiping possible without measurably increasing the product's environmental footprint.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
yes
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
5/5
Purpose: Bio-based solvent and emollient; mild surfactant aid

Common questions about Methyl Soyate (Soy Methyl Esters)

What is Methyl Soyate (Soy Methyl Esters) used for in car care?
Bio-based solvent and emollient; mild surfactant aid
Is Methyl Soyate (Soy Methyl Esters) a VOC?
No. Methyl Soyate (Soy Methyl Esters) is not classified as a volatile organic compound (VOC).
Is Methyl Soyate (Soy Methyl Esters) on California's Proposition 65 list?
No. Methyl Soyate (Soy Methyl Esters) is not on California's Proposition 65 list.
Is Methyl Soyate (Soy Methyl Esters) biodegradable?
Yes. Methyl Soyate (Soy Methyl Esters) has a confirmed biodegradable profile.

3 products 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.