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CarCareTruth

Copper Dinitrate

  • Oxidizers
  • CAS 3251-23-8
  • IUPAC: copper(II) nitrate

Copper Dinitrate (CAS 3251-23-8) appears in 1 of the 2,122 car-care products CarCareTruth tracks (as of August 2026).

Disclosed at trace level (0.0001-0.0003%) in the Optimum Fabric Cleaner & Protectant SDS (§3, rev. 06/09/2023) with ingredient-level classifications of Acute Tox. 3 (H301), Skin Irrit. 2 (H315), and Eye Irrit. 3 (H319). At this trace concentration it is far below the GHS mixture thresholds that would carry those codes to the product level, so it does not drive the finished product's health classification. Copper salts are irritants and are toxic if ingested in bulk quantity.

Copper dinitrate (copper(II) nitrate) is an inorganic copper salt present only at trace level (0.0001-0.0003%) in the Optimum Fabric Cleaner & Protectant SDS (rev. 06/09/2023). At that concentration it is well below the GHS mixture thresholds for its ingredient-level hazard codes (H301, H315, H319, H400), so it does not carry those classifications up to the product level.

Its most notable property is aquatic toxicity: Section 12 lists an LC50 of 0.19 mg/l for fish over 96 hours and an Aquatic Acute 1 (H400) classification, among the most toxic-to-aquatic-life of the disclosed components. Because copper is an element it does not biodegrade and persists in aquatic sediments, though the trace concentration keeps the finished product's aggregate aquatic classification at the milder chronic H412 level.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
yes
Biodegradable
no
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
2/5
Purpose: Trace inorganic copper salt (stabilizer / colorant aid) in the Optimum Fabric Cleaner & Protectant formulation

Common questions about Copper Dinitrate

What is Copper Dinitrate used for in car care?
Trace inorganic copper salt (stabilizer / colorant aid) in the Optimum Fabric Cleaner & Protectant formulation
Is Copper Dinitrate a VOC?
No. Copper Dinitrate is not classified as a volatile organic compound (VOC).
Is Copper Dinitrate on California's Proposition 65 list?
No. Copper Dinitrate 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.