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Distillates (Petroleum), Hydrodesulfurized Middle

  • Aliphatic solvents
  • CAS 64742-80-9
  • IUPAC: Distillates (petroleum), hydrodesulfurized middle

Distillates (Petroleum), Hydrodesulfurized Middle (CAS 64742-80-9) appears in 1 of the 2,122 car-care products CarCareTruth tracks (as of August 2026). It is classified as a VOC.

Carries Asp. Tox. 1 (H304) at ingredient level — aspiration hazard if swallowed and enters airways. Substance-level classifications include Flam. Liq. 4 (H227), Carc. 2 (H351), Germ Cell Mutagenicity Cat 2 (H341) in refined UVCB fractions. Carrier for aromatic sub-fractions that contribute carcinogenicity classification.

Distillates (petroleum), hydrodesulfurized middle (CAS 64742-80-9) is a refined petroleum fraction that spans the middle boiling range (approximately 170-380°C) and is chemically equivalent to No. 2 diesel fuel. In fuel system cleaner formulations it functions as the primary carrier vehicle for detergent actives, providing the solvent matrix that delivers cleaning chemistry through the fuel delivery system during combustion.

At 80-90% of a fuel additive concentrate formula, this fraction is the dominant volume component. Flash point is approximately 79°C (Setaflash), classifying it as a combustible liquid (Flam. Liq. 4 per GHS, H227). The hydrodesulfurization process removes sulfur content but does not eliminate the aromatic sub-fractions that carry carcinogenicity and mutagenicity classifications at mixture level.

DMSO extractable content and PAH burden vary by refinery source; the refined UVCB nature of this fraction means hazard classifications reflect the statistical distribution across production lots rather than a single defined chemical structure.

Health & environment profile

VOC
yes
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
no
Bioaccumulative
no
Persistent
yes
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
3/5
Purpose: Heavy carrier solvent and base fluid in fuel system cleaners; chemically equivalent to No. 2 diesel fuel at 80-90% concentrations

Common questions about Distillates (Petroleum), Hydrodesulfurized Middle

What is Distillates (Petroleum), Hydrodesulfurized Middle used for in car care?
Heavy carrier solvent and base fluid in fuel system cleaners; chemically equivalent to No. 2 diesel fuel at 80-90% concentrations
Is Distillates (Petroleum), Hydrodesulfurized Middle a VOC?
Yes. Distillates (Petroleum), Hydrodesulfurized Middle is classified as a volatile organic compound (VOC).
Is Distillates (Petroleum), Hydrodesulfurized Middle on California's Proposition 65 list?
No. Distillates (Petroleum), Hydrodesulfurized Middle 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.