1,5-Dinitronaphthalene Property

Melting point:

214 °C

Boiling point:

358.84°C (rough estimate)

Density 

1.58

refractive index 

1.7040 (estimate)

solubility 

Acetonitrile (Very Slightly), Chloroform (Slightly), DMSO (Very Slightly)

form 

Solid:granular

Water Solubility 

60 ppm (12 ºC), 90 ppm (50 ºC)

BRN 

527184

CAS DataBase Reference

605-71-0(CAS DataBase Reference)

NIST Chemistry Reference

Naphthalene, 1,5-dinitro-(605-71-0)

EPA Substance Registry System

1,5-Dinitronaphthalene (605-71-0)

Safety

Hazard Codes 

Xi,Xn

Risk Statements 

41-43-52/53-68-36/37/38

Safety Statements 

26-36/37/39-61-29

RIDADR 

2811

WGK Germany 

3

RTECS 

QJ4551000

HazardClass 

6.1(b)

PackingGroup 

III

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H318Causes serious eye damage

H319Causes serious eye irritation

H335May cause respiratory irritation

H341Suspected of causing genetic defects

H402Harmful to aquatic life

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

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

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

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

1,5-Dinitronaphthalene Chemical Properties,Usage,Production

Chemical Properties

Yellow to yellow-green needles or fluffy powder

Uses

1,5-Dinitronaphthalene is an intermediate in the production of naphthazarin (5,8- dihydroxy-1,4-naphthoquinone) and 1,5- naphthalenediamine, which is mainly converted to naphthalene 1,5-diisocyanate. As a sensitizing agent for ammonium nitrate explosives the use of mixed isomers is adequate.

Production Methods

Naphthalene is added slowly to mixed acid (22/58/20) at 40 ℃, and the temperature is raised to 80 ℃ over 4 h to give a mixture of 1,5- and 1,8-dinitronaphthalenes. The isomers are separated by fractional crystallization (e.g., from ethylene dichloride) or, preferably, by solvent extraction. The 1,5-isomer can be extracted with toluene, leaving 99 % pure 1,8- dinitronaphthalene. After evaporation of the toluene, the residue is extracted with a strongly polar solvent (e.g., sulfolane) to leave 99 % pure 1,5-isomer.

Definition

ChEBI: 1,5-dinitronaphthalene is a dinitronaphthalene carrying nitro groups at positions 1 and 5. It has a role as a genotoxin.

General Description

Yellowish white needles or light yellow fluffy solid.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

1,5-Dinitronaphthalene is incompatible with strong oxidizers and strong bases. Mixtures with sulfur or sulfuric acid may explode if heated to 248° F .

Fire Hazard

Flash point data for 1,5-Dinitronaphthalene are not available; however, 1,5-Dinitronaphthalene is probably combustible.

Safety Profile

A suspected carcinogen. Mutation data reported. Mxtures with sulfur or sulfuric acid (used in commercial reactions) may explode if heated to 120℃. Initiation temperature depends on the quality of the dinitronaphthalene. When heated to decomposition it emits toxic fumes of NOx. See also NITRO COMPOUNDS of AROMATICHYDROCARBONS