1-Naphthylamine

ChemicalBook > CAS DataBase List > 1-Naphthylamine

Product Name: 1-Naphthylamine
CAS No.: 134-32-7
Chemical Name: 1-Naphthylamine
Synonyms: naphthalen-1-amine;1-AMINONAPHTHALENE;α-Naphthylamine;1-AMinonapthalene;1-Naphthalenamine;ALPHA-NAPHTHYLAMINE;1-Nap;ci37265;Aminogen I;C.I. 37265
CBNumber: CB8719818
Molecular Formula: C10H9N
Formula Weight: 143.19
MOL File: 134-32-7.mol

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1-Naphthylamine Property

Melting point:: 47-50 °C (lit.)
Boiling point:: 301 °C (lit.)
Density: 1.114 g/mL at 25 °C (lit.)
vapor pressure: 0.003 hPa (20 °C)
refractive index: 1.6703
Flash point:: >230 °F
storage temp.: Store below +30°C.
solubility: 1.7g/l
pka: 3.92(at 25℃)
form: flakes
color: light tan to purple
PH: 7.1 (1g/l, H2O, 20℃)
PH Range: Non& uorescence (3.4) to blue & uorescence (4.8)
Odor: Ammonia odor
Water Solubility: Insoluble. 0.1698 g/100 mL
Merck: 14,6398
BRN: 386133
Henry's Law Constant: 6.13 x 10^-10 atm?m³/mol at 25 °C (thermodynamic method-GC/UV spectrophotometry, Altschuh et al., 1999)
Exposure limits: TLV-TWA not assigned; carcinogenicity: Human Carcinogen (skin) (MSHA and OSHA).
Major Application: color filter, photoresists, recording media, light-emitting device, disk, display device, oil products, construction materials, leather, textile, chalk, explosives
CAS DataBase Reference: 134-32-7(CAS DataBase Reference)
NIST Chemistry Reference: 1-Naphthalenamine(134-32-7)
IARC: 3 (Vol. 4, Sup 7) 1987
EPA Substance Registry System: 1-Naphthalenamine (134-32-7)

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Safety

Hazard Codes: C,N,Xn,T
Risk Statements: 34-51/53-22-45
Safety Statements: 26-36/37/39-45-61-24-53
RIDADR: UN 2790 8/PG 3
WGK Germany: 2
RTECS: QM1400000
F: 8-23
Autoignition Temperature: 460 °C
HS Code: 2921 45 00
HazardClass: 6.1(b)
PackingGroup: III
Hazardous Substances Data: 134-32-7(Hazardous Substances Data)
Toxicity: LD50 orally in Rabbit: 680 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P363Wash contaminated clothing before reuse.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 8.22291
Product name: 1-Naphthylamine
Purity: for synthesis
Packaging: 100g
Price: $42.9
Updated: 2024/03/01

Sigma-Aldrich

Product number: 8.22291
Product name: 1-Naphthylamine
Purity: for synthesis
Packaging: 1kg
Price: $157
Updated: 2024/03/01

Sigma-Aldrich

Product number: 38497
Product name: Nitrate Reagent A
Purity: for microbiology
Packaging: 100mL
Price: $45.7
Updated: 2024/03/01

Sigma-Aldrich

Product number: 34390
Product name: 1-Naphthylamine
Purity: analytical standard
Packaging: 250mg
Price: $116
Updated: 2024/03/01

TCI Chemical

Product number: N0052
Product name: 1-Naphthylamine
Purity: >99.0%(GC)(T)
Packaging: 25g
Price: $57
Updated: 2024/03/01

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1-Naphthylamine Chemical Properties,Usage,Production

Chemical Properties

α-Naphthylamine exists as white needle-like crystals which turn red on exposure to air. Has a weak ammonia-like odor. Solubility in water is 0.16% at 20℃. It behaves as a typical primary aromatic amine in forming salts with strong acids (but not with acetic or benzoic acid) and readily forming N-acyl derivatives. 1-Naphthylamine couples with diazo compounds in the 4-position, with up to 10 % byproduct being formed by coupling in the 2-position.

Physical properties

White to yellow crystals or rhombic needles with an unpleasant odor. Becomes purplish-red on exposure to air. Odor threshold concentrations were 140–290 μg/m3 (quoted, Keith and Walters, 1992).

Uses

1-Naphthylamine is used as a chemical intermediate in the synthesis of a wide variety of chemicals, the most important of which include dyes, tonic prints, Toning prints made with cerium salts, antioxidants, and herbicides.

Preparation

1-Naphthylamine is prepared by reduction of 1-nitronaphthalene: Purified 1-nitronaphthalene was traditionally reduced with iron in boiling dilute hydrochloric acid, but modern plants use hydrogenation with a nickel catalyst. The 1-naphthylamine produced is further purified by distillation under vacuum. The content of 2-naphthylamine in the commercial product is specified at <10 ppm.

Application

1-Naphthylamine is mainly used for the production of 1-naphthol. Other major uses are in the production of aminonaphthalenesulfonic acid dye intermediates and as a component of azo dyes.
1-Naphthylamine can also be used as a starting material to synthesize:
[(S)-HY-Phos], a novel chiral phosphine-phosphoramidite ligand for use in rhodium-catalyzed asymmetric hydrogenation of various functionalized olefins.
N-(naphthalen-1-yl)picolinamide.
Pitnot-2, an inactive analog of clathrin inhibitor Pitstop 2.

Definition

ChEBI: 1-naphthylamine is a naphthylamine that is naphthalene substituted by an amino group at position 1. It has a role as a human xenobiotic metabolite.

Synthesis Reference(s)

Tetrahedron Letters, 25, p. 429, 1984 DOI: 10.1016/S0040-4039(00)99903-9
Chemical and Pharmaceutical Bulletin, 34, p. 1524, 1986 DOI: 10.1248/cpb.34.1524

General Description

1-naphthylamine appears as a crystalline solid or a solid dissolved in a liquid. Insoluble in water and denser than water. Contact may slightly irritate skin, eyes and mucous membranes. May be slightly toxic by ingestion. Used to make other chemicals.

Air & Water Reactions

Sensitive to exposure to air and light. Insoluble in water. Napthyl amines can be slowly hydrolyzed, releasing NH3 as a byproduct [N.L. Drake, Org. React. 1, (1942), 105].

Reactivity Profile

1-Aminonaphthalene is incompatible with oxidizing agents. 1-Aminonaphthalene is also incompatible with nitrous acid. 1-Aminonaphthalene reduces warm ammoniacal silver nitrate. .

Hazard

Toxic, especially if containing the β isomer; a questionable carcinogen.

Health Hazard

1-Naphthylamine is a moderately toxic and cancer-causing substance. The toxic symptoms arising from oral intake or skin absorption of this compound include acute hemorrhagic cystitis, dyspnea, ataxia, dysuria, and hematuria. An intraperitoneal LD50 value in mice is 96 mg/kg. Inhalation of dusts or vapors is hazardous, showing similar symptoms. 1-Naphthylamine caused leukemia in rats. There is substantial evidence of its cancer-causing effects in animals and humans.

Fire Hazard

Special Hazards of Combustion Products: Toxic nitrogen oxides are produced in a fire.

Safety Profile

Confirmed carcinogen with experimental tumorigenic data. Along with p-naphthylamine and benzidine, it has been incriminated as a cause of urinary bladder cancer. Poison by subcutaneous and intraperitoneal routes. Moderately toxic by ingestion. Mutation data reported. Combustible when exposed to heat or flame. Incompatible with nitrous acid. To fight fire, use dry chemical, CO2, mist, spray. When heated to decomposition it emits toxic fumes of NOx.

Potential Exposure

α-Naphthylamine is used as an intermediate in dye production; for manufacturing herbicides and antioxidants; in the manufacture of condensation colors, rubber, and in the synthesis of many chemicals, such as α-naphthol, sodium naphthionate; o-naphthionic acid; Neville and Winther’s acid; sulfonated naphthylamines, α-naphthylthiourea (a rodenticide); and N-phenyl- α-naphthylamine.

Carcinogenicity

1-Naphthylamine has been tested for carcinogenic activity in mice, hamsters, and dogs by oral administration, in newborn mice by SC injection, and in mice by bladder implantation. Most of these studies reported negative findings, while a few found marginal or equivocal results. In contrast, with the exception of bladder implantation study, 2-naphthylamine gave positive results in virtually all these studies. Mixed results were reported in various genotoxicity tests. 1-Naphthylamine was positive in the Ames test and in vitro chromosome aberration, negative in micronucleus, cell transformation, and recessive lethal mutation in Drosophila, and inconclusive in sister chromatid exchange assays.

Environmental Fate

Biological. 1-Naphthylamine added to three different soils was incubated in the dark at 23 °C under a carbon dioxide-free atmosphere. After 308 d, 16.6 to 30.7% of the 1-naphthylamine added to soil biodegraded to carbon dioxide (Graveel et al., 1986). Li and Lee (1999) investigated the reaction of 10 mL of 7 mM 1-naphthylamine with 4 g of a Chalmers soil (pH: 6.5, 11.1% sand, 72.8% silt, 16.0% clay). After 120 h, the soil was washed with acetonitrile and the extractant analyzed using GC/MS. The primary transformation product was a dimer tentatively identified as N-(4-aminonaphthyl)-1-naphthylamine. The investigators hypothesized that the formation of this compound and two other unidentified dimers was catalyzed by minerals present in the soil.
Heukelekian and Rand (1955) reported a 5-d BOD value of 0.89 g/g which is 34.6% of the ThOD value of 2.57 g/g. In activated sludge inoculum, following a 20-d adaptation period, no degradation was observed (Pitter, 1976).
Photolytic. Low et al. (1991) reported that the photooxidation of aqueous primary amine solutions by UV light in the presence of titanium dioxide resulted in the formation of ammonium and nitrate ions.
Chemical/Physical. Kanno et al. (1982) studied the aqueous reaction of 1-naphthylamine and other substituted aromatic hydrocarbons (aniline, toluidine, 2-naphthylamine, phenol, cresol, pyrocatechol, resorcinol, hydroquinone, and 1-naphthol) with hypochlorous acid in the presence of ammonium ion. They reported that the aromatic ring was not chlorinated as expected but was cleaved by chloramine forming cyanogen chloride. The amount of cyanogen chloride that formed increased as the pH was lowered (Kanno et al., 1982).
At influent concentrations (pH 3.0) of 10, 1.0, 0.1, and 0.01 mg/L, the GAC adsorption capacities were 250, 140, 79, and 44 mg/g, respectively. At pHs 7.0 and 9.0, the GAC adsorption capacities were 360, 160, 75, and 34 mg/g at influent concentrations of 10, 1.0, 0.1, and 0.01 mg/L, respectively (Dobbs and Cohen, 1980).

Shipping

UN2077 alpha-Naphthylamine, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. PGIII.

Purification Methods

Sublime the amine at 120o in a stream of nitrogen, then crystallise it from pet ether (b 60-80o), or absolute EtOH then diethyl ether. Dry it in vacuo in an Abderhalden pistol. It has also been purified by crystallisation of its hydrochloride (see below) from water, followed by liberation of the free base and distillation; it is finally purified by zone melting. The styphnate has m 181-182o (from EtOH). [Beilstein 12 III 2846, 12 IV 3009.] CARCINOGEN.

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, nitrous acid, organic anhydrides, isocyanates, aldehydes. Oxidizes on contact with air.

Waste Disposal

Controlled incineration whereby oxides of nitrogen are removed from the effluent gas by scrubber, catalyst, or thermal device. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.

1-Naphthylamine Preparation Products And Raw materials

Raw materials

Sodium sulfide nonahydrate Naphthalene 1-Nitronaphthalene Sodium sulfide Polyphosphoric acid 1-Naphthoic acid Sodium disulfide Hydroxylamine hydrochloride

Preparation Products

1-Naphthol 7,8-BENZOQUINOLINE N-(1-NAPHTHYL)-3-AMINOPROPANESULFONIC ACID SODIUM SALT Direct Black 103 1-AMINO-8-NAPHTHOIC ACID Reactive Disperse Scarlet G 1-Chloronaphthalene Acid Brown 14 Direct Blue 78 ACID BLUE 113 2-Methoxynaphthalene Tracid Rubine 5bl γ-L-glutamyl-1-naphthylamide N-Phenyl-1-naphthylamine 3-Hydroxy-N-naphthalen-1-ylnaphthalene-2-carboxamide Acid Black 26 DISPERSE BLACK 1 1-(1-NAPHTHYL)-2-THIOUREA C.I. Direct blue 70 ACID BLACK 24 Direct Black 80 Direct Blue 71 1-Naphthyl isocyanate Solvent Black 3 1,4-DICHLORONAPHTHALENE Acid Orange 116 5-ACETAMIDONAPHTHALENE-1-SULFONYL CHLORIDE ACID BLUE 120 4-PHENYLAZO-1-NAPHTHYLAMINE

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Hebei Yanxi Chemical Co., Ltd.

Product: 1-Naphthylamine 134-32-7
Price: US $30.00-10.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 20 tons
Release date: 2023-11-16

Hebei Chuanghai Biotechnology Co,.LTD

Product: 1-Naphthylamine 134-32-7
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Purity: 99%
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Henan Bao Enluo International TradeCo.，LTD

Product: 1-Naphthylamine 134-32-7
Price: US $10.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 1000tons
Release date: 2023-07-26

134-32-7, 1-NaphthylamineRelated Search:

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1-Naphthylamine,98%

1-Aminonaftalen

1-aminonaftalen(czech)

1-Naftilamina

1-Naftylamin

1-Naftylamine

1-Naphthalamine

1-Naphthalenamine

1-Naphthylamin

1-NaphthylaMine >=99.0%

1-NaphthylaMine, CP,98%

a-Aminonaphthalene

Alfanaftilamina

Alfa-naftyloamina

alfa-naftyloamina(polish)

alpha-Naftalamin

alpha-Naftylamin

Fast Garnet Base B

fastgarnetbaseb

Naphthalen-1-ylamine

Rcra waste number U167

rcrawastenumberu167

naphthalidam

Naphthalidine

α-Naphthylamine

NITRATE REAGENT A

Fast garnet B base