Naphthenic Acids
| Formula: | Approx. C₁₁H₂₀O₂ (mixture of cycloaliphatic carboxylic acids, general formula CₙH₂ₙ₋zO₂) |
| CAS Number: | 1338-24-5 |
| EC Number (EINECS): | 215-662-8 |
| HS Code: | 38231900 |
| UN Number: | 3082 (Environmentally Hazardous Substance, liquid, n.o.s.) |
| IUPAC Name: | Cycloaliphatic Carboxylic Acids (mixture) |
| Also Known As: | Petroleum Naphthenic Acids; Cycloaliphatic Carboxyl Acids |
| Molecular Weight, g/mol: | Typically 200–450 (mixture dependent) |
Typical Specifications
| Appearance: | Dark brown to amber viscous liquid |
| Odor: | Characteristic petroleum-like odor |
| Flash Point, °C: | >100 |
| Solubility: | Soluble in organic solvents; limited in water |
| Grades Available: | Technical, Industrial, Metalworking Grade |
| Packaging: | 200kg drums, 1000kg IBC, bulk ISO tanks |
Applications / Uses
Primary Applications
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Used in metal naphthenate salts (driers, catalysts, stabilizers)
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Corrosion inhibitors in lubricants and fuel additives
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Component in wood preservatives and fungicides
Secondary Applications
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Emulsifier in paints and coatings
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Intermediate in production of surfactants
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Used in oilfield chemicals (drilling muds, corrosion protection)
End Industries Served: Lubricants, Paints & Coatings, Oil & Gas, Wood Preservation, Chemicals, Metalworking
Safety & Handling Information
Hazard Class (GHS): Acute Toxicity (Category 4), Skin Irritant (Category 2), Aquatic Chronic (Category 2)
Hazard Statements (H-Codes):
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H302: Harmful if swallowed
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H315: Causes skin irritation
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H319: Causes serious eye irritation
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H411: Toxic to aquatic life with long-lasting effects
Precautionary Statements (P-Codes):
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P273: Avoid release to the environment
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P280: Wear protective gloves/eye protection
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P301 + P312: IF SWALLOWED – Call a POISON CENTER if you feel unwell
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P305 + P351 + P338: IF IN EYES – Rinse cautiously with water
Storage Conditions
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Store in tightly closed containers in a dry, well-ventilated place
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Protect from direct sunlight and sources of ignition
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Avoid release into the environment
Transport Information
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ADR/RID: Class 9, UN3082, PG III
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IMDG: Class 9, UN3082, PG III, Marine Pollutant
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IATA: Class 9, UN3082, PG III