831-52-7

Basic information

• Product Name: Sodium picramate
• Synonyms: Sodium 4,6-dinitro-2-aminophenate,dry or wetted with less than 20% water,by mass;Sodium 4,6-Dinitro-2-aminophenolate;SODIUM PICRAMATE;Sodium picramate,wetted with not less than20% water,by mass;SODIUM 2-AMINO-4,6-DINITROPHENOXIDE;2-AMINO-4,6-DINITRO-PHENOL SODIUM SALT (SODIUM PICRAMATE);Sodium Picramate (>88.0% anhydrous basis);2-Amino-4,6-dinitro-phenol, Natrium-Salz
• CAS NO: 831-52-7
• Molecular Formula: C₆H₄N₃O₅*Na
• Molecular Weight: 221.1
• EINECS: 212-603-8
• Product Categories: Intermediates of Dyes and Pigments
• Mol File: 831-52-7.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 386.3 °C at 760 mmHg
• Flash Point: 187.5 °C
• Appearance: Dark red prescake
• Vapor Pressure: 1.6E-06mmHg at 25°C
• Solubility: 3.478g/L in organic solvents at 20 ℃
• Water Solubility: 10.602g/L at 25℃
• CAS DataBase Reference: Sodium picramate(CAS DataBase Reference)
• NIST Chemistry Reference: Sodium picramate(831-52-7)
• EPA Substance Registry System: Sodium picramate(831-52-7)

Safety Data

• RIDADR: UN 0235/1349
• HazardClass: 1.3C
• PackingGroup: II
• Hazardous Substances Data: 831-52-7(Hazardous Substances Data)

Usage

Chemical Properties

Dark red prescake

Uses

Manufacture of dye intermediates, organic syn- thesis.

General Description

A yellow solid. Toxic by inhalation and skin absorption. Primary hazard is fire with either a minor blast or projection hazard or both, but no mass explosion hazard. May explode under prolonged exposure to heat.

Reactivity Profile

Sodium picramate can react vigorously with reducing agents, including hydrides, sulfides and nitrides, leading to a detonation. Emits toxic fumes when heated to decomposition.

Hazard

Dangerous fire and explosion hazard when dry. Toxic by ingestion and skin absorption.

Health Hazard

Fire may produce irritating, corrosive and/or toxic gases.

Fire Hazard

MAY EXPLODE AND THROW FRAGMENTS 1600 meters (1 MILE) OR MORE IF FIRE REACHES CARGO.

Flammability and Explosibility

Notclassified

Safety Profile

Poison by ingestion. A flammable solid and explosive. When heated to decomposition it emits toxic fumes of NOx and Na2O. See also PICRAMIC ACID.

InChI:InChI=1/C6H5N3O5.Na/c7-4-1-3(8(11)12)2-5(6(4)10)9(13)14;/h1-2,10H,7H2;/q;+1/p-1

Synthetic route

sodium picramate (831-52-7) → 2-hydroxy-3,5-dinitro-benzenediazonium betaine (4682-03-5)

Conditions	Yield
With hydrogenchloride; sodium nitrite for 1h;

sodium picramate (831-52-7) → sodium 6-azido-2,4-dinitrophenolate

Conditions	Yield
Multi-step reaction with 2 steps 1: sodium nitrite, aq. HCl / 1 h 2: sodium azide / acetone / 0.5 h View Scheme

sodium picramate (831-52-7) + silver nitrate → {AgC6H4N3O5} (33393-67-8)

Conditions	Yield
In not given washed (H2O and alc.), dried in desiccator;

sodium picramate (831-52-7) + holmium(III) nitrate → Ho(3+)*3C6H4N3O5(1-)*2H2O=Ho(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + cerous nitrate → Ce(3+)*3C6H4N3O5(1-)*2H2O=Ce(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + gadolinium(III) nitrate → Gd(3+)*3C6H4N3O5(1-)*2H2O=Gd(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + dysprosium nitrate → Dy(3+)*3C6H4N3O5(1-)*2H2O=Dy(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + neodymium(III) nitrate (16454-60-7) → Nd(3+)*3C6H4N3O5(1-)*2H2O=Nd(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + terbium(III) nitrate → Tb(3+)*3C6H4N3O5(1-)*2H2O=Tb(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + samarium(III) nitrate → Sm(3+)*3C6H4N3O5(1-)*2H2O=Sm(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

promethium (III) nitrate + sodium picramate (831-52-7) → Pm(3+)*3C6H4N3O5(1-)*2H2O=Pm(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + europium(III) nitrate → Eu(3+)*3C6H4N3O5(1-)*2H2O=Eu(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + lanthanum(III) nitrate → La(3+)*3C6H4N3O5(1-)*2H2O=La(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

sodium picramate (831-52-7) + praseodymium(III) nitrate → Pr(3+)*3C6H4N3O5(1-)*2H2O=Pr(C6H2(NO2)2(NH2)O)3*2H2O

Conditions	Yield
In water sodium picramate and rare earth(III) nitrate in 4:1 mole ratio; stirring with scratching the walls of container; 2 h crystn. at room temp.; filtration; washing (water, then ethanol); drying in vac. at room temp.;
In water

Downstream Products

• 4682-03-5 2-hydroxy-3,5-dinitro-benzenediazonium betaine