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1-Amino-7-naphthol

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Name

1-Amino-7-naphthol

EINECS 204-252-4
CAS No. 118-46-7 Density 1.281 g/cm3
PSA 46.25000 LogP 2.70880
Solubility Soluble in hot water and ethanol Melting Point 204-207 °C
Formula C10H9NO Boiling Point 378.3 °C at 760 mmHg
Molecular Weight 159.188 Flash Point 182.6 °C
Transport Information N/A Appearance Grey to grey-brown granular powder
Safety 26-36-37/39 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 118-46-7 (1-Amino-7-naphthol) Hazard Symbols IrritantXi
Synonyms

NSC 7939;NSC 60277;2-Naphthol,8-amino- (7CI,8CI);1-Amino-7-hydroxynaphthalene;8-Amino-2-naphthol;7-Hydroxy-1-naphthylamine;

Article Data 8

1-Amino-7-naphthol Consensus Reports

Reported in EPA TSCA Inventory.

1-Amino-7-naphthol Specification

The 8-Amino-2-naphthol with CAS registry number of 118-46-7 is also known as 1-Amino-7-naphthol. The IUPAC name is 8-Aminonaphthalen-2-ol. It belongs to product categories of Intermediates of Dyes and Pigments; Anilines, Aromatic Amines and Nitro Compounds; Organic Building Blocks; Oxygen Compounds; Phenols. Its EINECS registry number is 204-252-4. In addition, the formula is C10H9NO and the molecular weight is 159.18. This chemical is a grey to grey-brown granular powder that soluble in hot water and ethanol. It may cause inflammation to the skin or other mucous membranes and should be sealed in ventilated, cool room away from fire and oxidants. What's more, this chemical is used as dye intermediate and also used for organic synthesis.

Physical properties about 8-Amino-2-naphthol are: (1)ACD/LogP: 1.43; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.41; (4)ACD/LogD (pH 7.4): 1.43; (5)ACD/BCF (pH 5.5): 6.91; (6)ACD/BCF (pH 7.4): 7.16; (7)ACD/KOC (pH 5.5): 137.26; (8)ACD/KOC (pH 7.4): 142.15; (9)#H bond acceptors: 2; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 2; (12)Index of Refraction: 1.741; (13)Molar Refractivity: 50.21 cm3; (14)Molar Volume: 124.2 cm3; (15)Surface Tension: 64.3 dyne/cm; (16)Density: 1.281 g/cm3; (17)Flash Point: 182.6 °C; (18)Enthalpy of Vaporization: 65.07 kJ/mol; (19)Boiling Point: 378.3 °C at 760 mmHg; (20)Vapour Pressure: 2.92E-06 mmHg at 25 °C.

Preparation of 8-Amino-2-naphthol: it is prepared by alkali fusion and acidification reaction of 1,7-amino-naphthalene sulfonic acid.

Uses of 8-Amino-2-naphthol: it is used to produce (7-hydroxy-[1]naphthyl)-carbamic acid methyl ester by reaction with carbonochloridic acid methyl ester. The reaction occurs with reagent pyridine for 45 minutes. The yield is about 100%.

8-Amino-2-naphthol is used to produce (7-hydroxy-[1]naphthyl)-carbamic acid methyl ester by reaction with carbonochloridic acid methyl ester.

When you are using this chemical, please be cautious about it. As a chemical, it is irritating to eyes, respiratory system and skin. During using it, wear suitable protective clothing, gloves and eye/face protection. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
1. Canonical SMILES: C1=CC2=C(C=C(C=C2)O)C(=C1)N
2. InChI: InChI=1S/C10H9NO/c11-10-3-1-2-7-4-5-8(12)6-9(7)10/h1-6,12H,11H2
3. InChIKey: KVHHMYZBFBSVDI-UHFFFAOYSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 180mg/kg (180mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#04024,

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