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1,8-Diaminonaphthalene

1,8-Diaminonaphthalene Structure
CAS No.
479-27-6
Chemical Name:
1,8-Diaminonaphthalene
Synonyms
Naphthalene-1,8-diamine;1,8-NAPHTHALENEDIAMINE;1,8-Diaminonaphthalene,99%;1,8-DiaminonaphthaL;8-Diaminonaphthalene;1,8-Diaminonaphthale;1,8-Naphthylendiamin;1,8-Diaminonaphthalane;1,8-DIAMINONAPHTHALONE;DIAMINONAPHTHALENE-1,8
CBNumber:
CB2728423
Molecular Formula:
C10H10N2
Molecular Weight:
158.2
MOL File:
479-27-6.mol
MSDS File:
SDS
Modify Date:
2024/3/25 11:48:53

1,8-Diaminonaphthalene Properties

Melting point 60-65 °C (lit.)
Boiling point 205 °C/12 mmHg (lit.)
Density 1.1265
vapor pressure 0.011Pa at 25℃
refractive index 1.6829
Flash point 205°C/12mm
storage temp. Store below +30°C.
solubility methanol: soluble
pka 4.46±0.10(Predicted)
form Chunks or Crystalline Mass
color Grayish-red to gray or dark brown
Water Solubility slightly soluble
Merck 14,6372
BRN 742841
Stability Air Sensitive
InChIKey YFOOEYJGMMJJLS-UHFFFAOYSA-N
LogP 1.335
CAS DataBase Reference 479-27-6(CAS DataBase Reference)
NIST Chemistry Reference 1,8-Naphthalenediamine(479-27-6)
EPA Substance Registry System 1,8-Naphthalenediamine (479-27-6)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07,GHS08
Signal word  Warning
Hazard statements  H302-H317-H351
Precautionary statements  P201-P280-P301+P312+P330-P302+P352-P308+P313
Hazard Codes  Xn,Xi
Risk Statements  22-40-43-36/37/38
Safety Statements  36/37-36/37/39-26-24-36
RIDADR  2811
WGK Germany  3
8
Hazard Note  Irritant
TSCA  Yes
HS Code  29215940
Toxicity LD50 orally in Rabbit: 800 mg/kg
NFPA 704
0
2 0

1,8-Diaminonaphthalene price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) D21405 1,8-Diaminonaphthalene 99% 479-27-6 5G ₹1959.33 2022-06-14 Buy
Sigma-Aldrich(India) D21405 1,8-Diaminonaphthalene 99% 479-27-6 100G ₹5044.45 2022-06-14 Buy
Sigma-Aldrich(India) 8.06206 1,8-Naphthalenediamine for synthesis 479-27-6 100G ₹5730 2022-06-14 Buy
Sigma-Aldrich(India) 8.06206 1,8-Naphthalenediamine for synthesis 479-27-6 500G ₹19970 2022-06-14 Buy
ALFA India ALF-A15966-30 1,8-Diaminonaphthalene, 97% 479-27-6 250g ₹11235 2022-05-26 Buy
Product number Packaging Price Buy
D21405 5G ₹1959.33 Buy
D21405 100G ₹5044.45 Buy
8.06206 100G ₹5730 Buy
8.06206 500G ₹19970 Buy
ALF-A15966-30 250g ₹11235 Buy

1,8-Diaminonaphthalene Chemical Properties,Uses,Production

Chemical Properties

Off white powder. 1,8-Naphthalenediamine [479-27-6]. 1,8-diaminonaphthalene, Deltamin, C10H10N2, Mr 158.2, turns brown in air even in the absence of light. Its solutions give a brown precipitate on addition of iron(III) chloride. Treatment with boiling aqueous sodium bisulfite followed by addition of alkali gives 8-amino-1-hydroxynaphthalene. Sulfonation takes place in the 4- position. Coupling with azo compounds also occurs in the 4-position, but in almost neutral solution 4,5-bis coupling can occur. The resulting bisazo compound is reduced with SnCl2– HCl to give 1,4,5,8-tetraaminonaphthalene.

Uses

1,8-Diaminonaphthalene is an important raw material and intermediate used in organic synthesis, pharmaceuticals and agrochemicals. 1,8-Naphthalenediamine has minor use as an antioxidant for lubricating oils and as an analytical reagent for the detection of selenium and nitrites.

Production Methods

Reduction of 1,8-dinitronaphthalene is carried out with iron and acetic acid in xylene or by catalytic hydrogenation.

Purification Methods

Crystallise 1,8-diaminonaphthalene from water or aqueous EtOH, and sublime it in a vacuum. The N,N'-dimethyl derivative [20734-56-9] has m 103-104o and pK2 5 5.61, the N,N,N'-trimethyl-derivative [20734-57-0] has m 29-30o and pK2 5 6.43. [Hodgson et al. J Chem Soc 202 1945, Beilstein 13 IV 344.]

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1,8-Diaminonaphthalene (1,8-Naphthalene diamine) 1,8-DIAMINONAPHTHALONE 1.8-DIAMINA-NAPTHALENE 99.6+% 1,8-Diaminonaphthalene,90%,tech. 1,8-Diaminonaphthale 8-Diaminonaphthalene Naphthalene-1,8-diamine 99% 1,8-DiaMinonaphthalene, 97% 100GR 1,8-DiaMinonaphthalene, 97% 5GR 1,8-NAPHTHALENEDIAMINE FOR SYNTHESIS 1,8-Diaminonaphthalane DIAMINONAPHTHALENE-1,8 1,8-NAPHTHYLENEDIAMINE 1,8-DIAMINONAPHTHALENE 1,8-DIAMINONAPHTHALENE, FOR FLUORESCENCE 1,8-Diaminonaphthalene,~97% 1,8-Diaminonaphthalene, tech., 90% 1,8-Diaminonaphthalene 96% 1,8-DiaminonaphthaL Naphthalene-1,8-diamine, technical Naphthalene-1,8-diamine 479-27-6 1,8-Diaminonaphthalene 1,8-Diaminonaphthalene 479-27-6 1,8-Naphthylendiamin 1,8-Diaminonaphthalene(Technical) 1,8-Diaminonaphthalene> 1,8-Diaminonaphthalene@100 μg/mL in Toluene 1,8-Diaminonaphthalene,99% Naphthalene-1,8-diamine 1,8-NAPHTHALENEDIAMINE 1,8-Diaminonaphthalene CAS.479-27-6 1,8-Diaminonaphthalene, ≥ 98.0% 479-27-6 Detection Fluorescent Probes, Labels, Particles and Stains BioChemical Biochemicals and Reagents Building Blocks Organic Building Blocks Nitrogen Compounds Polyamines Building Blocks Chemical Synthesis Nitrogen Compounds Organic Building Blocks Polyamines Organics Benzene derivatives Intermediates of Dyes and Pigments