Basic information
- Name:
2-Naphthol
- CAS No.:
135-19-3
- Molecular Structure:
- Formula:
- C10H8O
- Molecular Weight:
- 144.1699
- Deleted CAS:
- 860440-31-9
- Synonyms:
- 2-Naphthol(8CI);2-Hydroxynaphthalene;Azogen Developer A;Betanaphthol;C.I. 37500;C.I. Developer 5;Developer AMS;Developer BN;Isonaphthol;NSC 2044;Naphthol B;b-Hydroxynaphthalene;b-Naphthol;b-Naphthyl alcohol;
- EINECS:
- 205-182-7
- Density:
- 1.182 g/cm3
- Melting Point:
- 120-122 °C(lit.)
- Boiling Point:
- 285.499 °C at 760 mmHg
- Flash Point:
- 144.002 °C
- Solubility:
- Very slightly soluble in water: 1 g/L (20 °C)
- Appearance:
- broken white shiny flakes or white powder
- Hazard Symbols:
Xn,
N- Risk Codes:
- 20/22-50
- Safety Description:
- 24/25-61 Details
- Transport Information:
- UN 3077 9/PG 3
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Chemistry
IUPAC Name: Naphthalen-2-ol
Molecular Formula: C10H8O
Molecular Weight: 144.169920 g/mol
Melting Point: 120-122 °C(lit.)
Boiling Point: 285-286 °C(lit.)
Flash Point: 153 °C
Density: 1.28 g/cm3
Index of Refraction: 1.677
Molar Refractivity: 45.97 cm3
Molar Volume: 121.9 cm3
Surface Tension: 51 dyne/cm
Water Solubility: 1 g/L (20 °C)
Canonical SMILES: C1=CC=C2C=C(C=CC2=C1)O
InChI: InChI=1S/C10H8O/c11-10-6-5-8-3-1-2-4-9(8)7-10/h1-7,11H
InChIKey: JWAZRIHNYRIHIV-UHFFFAOYSA-N
EINECS: 205-182-7
Product Categories: Intermediates; Aromatic Compounds; Color Former & Related Compounds; Developer; Functional Materials; Dyestuff Intermediates
Uses
2-Naphthol (CAS NO.135-19-3) is an intermediate of naphthalene acid which is a plant growth regulator.
2-Naphthol is used as a feed preservative and analytical reagent.
2-Naphthol is an important organic raw material and dyes intermediate, for the manufacture of Tobias acid, butyric acid, β-naphthol-3-carboxylic acid, and used to manufacture antioxidant, Antioxidant DNP, and other antioxidant, organic pigments and fungicides.
Toxicity Data With Reference
| 1. | skn-rbt 500 mg/24H MLD | BIOFX* BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets .(Northbrook, IL.: )1973,26-4. | ||
| 2. | eye-rbt 100 mg MOD | BIOFX* BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets .(Northbrook, IL.: )1973,26-4. | ||
| 3. | dnr-esc 2 mg/disc | MUREAV Mutation Research. 97 (1982),1. | ||
| 4. | dnr-bcs 5 g/L | MUREAV Mutation Research. 42 (1977),19. | ||
| 5. | orl-rat LD50:1960 mg/kg | GTPPAF Gigiena Truda i Professionalnaya Patologiya v Estonskoi SSR. Labor Hygiene and Occupational Pathology in the Estonian SSR. 8 (1972),145. | ||
| 6. | ihl-rat LC50:>20 mg/m3 | GISAAA Gigiena i Sanitariya 38 (10)(1973),15. | ||
| 7. | scu-rat LDLo:2940 mg/kg | AEPPAE Naunyn-Schmiedebergs Archiv fuer Experimentelle Pathologie und Pharmakologie. 186 (1937),195. | ||
| 8. | orl-mus LDLo:100 mg/kg | HBAMAK “Abdernaldens Handbuch der Biologischen Arbeitsmethoden.“ 4 (1935),1289. | ||
| 9. | ipr-mus LD50:97,500 mg/kg | EJMCA5 European Journal of Medicinal Chemistry. Chimie Therapeutique. 13 (1978),381. | ||
| 10. | scu-mus LDLo:100 mg/kg |
Consensus Reports
Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.
Safety Profile
Hazard Codes: 
Xn, 
N
Risk Statements: 20/22-50
R20/22:Harmful by inhalation and if swallowed.
R50:Very toxic to aquatic organisms.
Safety Statements: 24/25-61
S24/25:Avoid contact with skin and eyes.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 3077 9/PG 3
WGK Germany: 2
RTECS: QL2975000
F: 8
HazardClass: 9
PackingGroup: III
HS Code: 29071590
Poison by ingestion, inhalation, and subcutaneous routes. Mutation data reported. A skin and eye irritant. Combustible when exposed to heat or flame. To fight fire, use CO2, dry chemical. Incompatible with antipyrine, camphor, phenol, ferric salts, menthol, potassium permanganate and other oxidizing materials, urethane.
Specification
2-Naphthol (CAS NO.135-19-3) is also named as 2-Hydroxynaphthalene ; 2-Naftol ; 2-Naphthalenol ; AI3-00081 ; Azogen developer A ; Betanaphthol ; C.I. 37500 ; C.I. Azoic Coupling Component 1 ; C.I. Developer 5 ; Caswell No. 590 ; Developer AMS ; Developer BN ; Developer sodium ; EINECS 205-182-7 ; EPA Pesticide Chemical Code 010301 ; HSDB 6812 ; Isonaphthol ; NAPHTHOL, BETA ; NSC 2044 ; Naphthol B ; UNII-P2Z71CIK5H ; beta-Hydroxynaphthalene ; beta-Monoxynaphthalene . 2-Naphthol (CAS NO.135-19-3) is broken white shiny flakes or white powder. It is soluble in ethanol, ether, chloroform, glycerol and alkaline solution, insolublr in water.
