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831-52-7

Basic Information
CAS No.: 831-52-7
Name: Phenol,2-amino-4,6-dinitro-, sodium salt (1:1)
Molecular Structure:
Molecular Structure of 831-52-7 (Phenol,2-amino-4,6-dinitro-, sodium salt (1:1))
Formula: C6H4N3NaO5
Molecular Weight: 221.10 .
Synonyms: Phenol,2-amino-4,6-dinitro-, monosodium salt (8CI,9CI);Picramic acid, sodium deriv.(6CI);Sodium, (2-amino-4,6-dinitrophenoxy)- (7CI);Sodium6-amino-2,4-dinitrophenolate;Sodium picramate;
EINECS: 212-603-8
Density:
Melting Point:
Boiling Point: 386.3 °C at 760 mmHg
Flash Point: 187.5 °C
Solubility:
Appearance: Dark red prescake
Hazard Symbols:
Risk Codes:
Safety:
Transport Information: UN 0235/1349
PSA: 140.72000
LogP: 2.85660
Synthetic route
831-52-7

sodium picramate

4682-03-5

2-hydroxy-3,5-dinitro-benzenediazonium betaine

Conditions
ConditionsYield
With hydrogenchloride; sodium nitrite for 1h;
831-52-7

sodium picramate

sodium 6-azido-2,4-dinitrophenolate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium nitrite, aq. HCl / 1 h
2: sodium azide / acetone / 0.5 h
View Scheme
831-52-7

sodium picramate

silver nitrate

33393-67-8

{AgC6H4N3O5}

Conditions
ConditionsYield
In not given washed (H2O and alc.), dried in desiccator;
831-52-7

sodium picramate

holmium(III) nitrate

Ho(3+)*3C6H4N3O5(1-)*2H2O=Ho(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

cerous nitrate

Ce(3+)*3C6H4N3O5(1-)*2H2O=Ce(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

gadolinium(III) nitrate

Gd(3+)*3C6H4N3O5(1-)*2H2O=Gd(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

dysprosium nitrate

Dy(3+)*3C6H4N3O5(1-)*2H2O=Dy(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

16454-60-7

neodymium(III) nitrate

Nd(3+)*3C6H4N3O5(1-)*2H2O=Nd(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

terbium(III) nitrate

Tb(3+)*3C6H4N3O5(1-)*2H2O=Tb(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

samarium(III) nitrate

Sm(3+)*3C6H4N3O5(1-)*2H2O=Sm(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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

831-52-7

sodium picramate

Pm(3+)*3C6H4N3O5(1-)*2H2O=Pm(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

europium(III) nitrate

Eu(3+)*3C6H4N3O5(1-)*2H2O=Eu(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

lanthanum(III) nitrate

La(3+)*3C6H4N3O5(1-)*2H2O=La(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
831-52-7

sodium picramate

praseodymium(III) nitrate

Pr(3+)*3C6H4N3O5(1-)*2H2O=Pr(C6H2(NO2)2(NH2)O)3*2H2O

Conditions
ConditionsYield
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
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Chemistry

Molecular Formula: C6H4N3NaO5
Formula Weight: 221.1
Flash Point: 187.5 °C 
Boiling Point: 386.3 °C at 760 mmHg 
Vapour Pressure: 1.6E-06 mmHg at 25 °C 
Appearance: Dark red prescake
Structure of Sodium picramate (CAS NO.831-52-7):
                       
IUPAC Name: Sodium 2-amino-4,6-dinitrophenolate
Canonical SMILES: C1=C(C=C(C(=C1[N+](=O)[O-])[O-])N)[N+](=O)[O-].[Na+]
InChI: InChI=1S/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
InChIKey: UENNEPPWFZYINW-UHFFFAOYSA-M
Product Category of Sodium picramate (CAS NO.831-52-7): Intermediates of Dyes and Pigments

Uses

 Sodium picramate (CAS NO.831-52-7) can be used in pyrotechnics and rocket fuel. It is used to make dyes (acid, chrome), insecticides and as a colorimetric reagent to determine albumin to pyrotechnic application.

Toxicity Data With Reference

1.    

orl-mus LD50:378 mg/kg

    JACTDZ    Journal of the American College of Toxicology. 11 (1992),447.

Consensus Reports

Reported in EPA TSCA Inventory.

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, SODIUM SALT; PICRAMIC ACID, ZIRCONIUM SALT (WET).

Standards and Recommendations

ASSAY ( DRY BASIS): 98.0% min
AMINO CONTENT: 86.0% min
FREE ACID: 0.1% max
WATER: 30.0% or more
DOT Classification:  EXPLOSIVE 1.3C; Label: EXPLOSIVE 1.3C (UN 0235); DOT Class: 4.1; Label: Flammable Solid (UN 1349)

Specification

 Sodium picramate , its cas register number is 831-52-7. It also can be called Sodium 2-amino-4,6-dinitrophenoxide ; 2-Amino-4,6-dinitrophenol sodium salt ; and Phenol, 2-amino-4,6-dinitro-, sodium salt . It should be kept away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Keep it in a cool, dry, dark location in a tightly sealed container or cylinder.