Basic information
- Name:
Naphthenic acid
- CAS No.:
1338-24-5
- Molecular Structure:
- Formula:
- C10H18O2
- Molecular Weight:
- 170.2487
- Synonyms:
- Acidol(petroleum by-product);Carboxylic acids, naphthenic;ISAN 185;NA 165;NA 200(acid);NS 130;NS 160;NY 160;NY 200;SNA 180;SNA 185;SP230;Sunaptic B;Tensioactiv N;
- EINECS:
- 215-662-8
- Density:
- 0.972 g/cm3
- Boiling Point:
- 268.2 °C at 760 mmHg
- Flash Point:
- 127.4 °C
- Solubility:
- insoluble in water
- Appearance:
- clear yellowish to brown viscous liquid
- Hazard Symbols:
Xi,
Xn- Risk Codes:
- 36/37/38-51/53
- Safety Description:
- 26-36-61 Details
- Transport Information:
- UN 3082 9/PG 3
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Chemistry
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IUPAC Name: 3-(3-Ethylcyclopentyl)propanoic acid
Empirical Formula: C10H18O2
Molecular Weight: 170.2487
Canonical SMILES: CCC1CCC(C1)CCC(=O)O
InChI: InChI=1S/C10H18O2/c1-2-8-3-4-9(7-8)5-6-10(11)12/h8-9H,2-7H2,1H3,(H,11,12)
InChIKey: WVRFSLWCFASCIS-UHFFFAOYSA-N
Index of Refraction: 1.459
Molar Refractivity: 47.9 cm3
Molar Volume: 174.9 cm3
Surface Tension: 36.4 dyne/cm
Density: 0.972 g/cm3
Flash Point: 127.4 °C
Enthalpy of Vaporization: 55.73 kJ/mol
Boiling Point: 268.2 °C at 760 mmHg
Vapour Pressure: 0.00223 mmHg at 25 °C
FreezingPoint -30 - -36 °C
EINECS: 215-662-8
Classification Code of Naphthenic acid (CAS NO.1338-24-5): TSCA UVCB
Uses
Naphthenic acid is a complex of carboxylic acids.It is used in deicing, dust control, wood preservative and road stabilization. It's industrial applications include the production of metallic naphthenates, synthetic detergents and as a solvents. as a lubricant, Corrosion inhibitor and fuel additive.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rat | LD50 | intraperitoneal | 640mg/kg (640mg/kg) | BEHAVIORAL: FOOD INTAKE (ANIMAL) GASTROINTESTINAL: PERITONITIS | AMA Archives of Industrial Health. Vol. 12, Pg. 477, 1955. |
| rat | LD50 | oral | 3gm/kg (3000mg/kg) | BEHAVIORAL: FOOD INTAKE (ANIMAL) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" GASTROINTESTINAL: OTHER CHANGES | AMA Archives of Industrial |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Moderately toxic by ingestion and intraperitoneal routes. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes: 
Xi,
N
Risk Statements: 36/37/38-51/53
R36/37/38:Irritating to eyes, respiratory system and skin.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 26-36-61
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 3082 9/PG 3
WGK Germany :2
RTECS: QK8750000
Specification
Naphthenic acid (CAS NO.1338-24-5), its Synonyms are Acide naphtenique ; Agenap ; Carboxylic acids, naphthenic ; Sunaptic acid B ; Sunaptic acid C ; Naphthenic acids . It is a dark colored liquid with an offensive odor .