SODIUM COBALTINITRITE

SODIUM COBALTINITRITE Basic information
Product Name:SODIUM COBALTINITRITE
Synonyms:COBALTIC SODIUM NITRITE;COBALT SODIUM NITRITE;COBALT(III) SODIUM NITRITE;SODIUM COBALTINITRITE;SODIUM COBALTNITRITE;SODIUM HEXANITRITOCOBALTATE(III);SODIUM HEXANITROCOBALTATE;SODIUM HEXANITROCOBALTATE(+3)
CAS:13600-98-1
MF:CoN6NaO12(-2)
MW:357.95
EINECS:237-077-7
Product Categories:Materials Science;Metal and Ceramic Science;Salts;Sodium Salts;Ultra-High Purity Materials
Mol File:13600-98-1.mol
SODIUM COBALTINITRITE Structure
SODIUM COBALTINITRITE Chemical Properties
Melting point 220 °C (dec.)(lit.)
storage temp. Store below +30°C.
solubility 720g/l
form Solid
color Orange to orange-brown
OdorOdorless
PH5 (100g/l, H2O, 20℃)
Water Solubility Soluble in water
Merck 13,8677
Stability:Stable. Contact with conbustible material may cause fire. Incompatible with strong acids, organic materials, amines.
CAS DataBase Reference13600-98-1(CAS DataBase Reference)
Safety Information
Hazard Codes O,Xn
Risk Statements 8-36/37/38-42/43-40
Safety Statements 17-26-36/37
RIDADR UN 1479 5.1/PG 2
WGK Germany 3
RTECS GF9480000
HazardClass 5.1
PackingGroup II
HS Code 28429090
MSDS Information
ProviderLanguage
SigmaAldrich English
ACROS English
ALFA English
SODIUM COBALTINITRITE Usage And Synthesis
Chemical PropertiesSODIUM COBALTINITRITE is deep yellow to brown crystalline powder
UsesNitrosation reagent for the conversion of aromatic amines to 1,3-diaryltriazenes with excellent yield.1
UsesSODIUM COBALTINITRITE is used in the detection Potassium.
UsesFor the detection of potassium with which it forms a slightly soluble compound.
PreparationSodiumhexanitrocobaltate(III) ("sodiumcobaltinitrite") Na3Co(N02)6 is a well-known orange solid which precipitates potassium ions from aqueous solution as K3Co(NO2)6. It is prepared by blowing air through a mixture of cobalt(II) nitrate and sodium nitrite solutions in the presence of acetic acid:
2[Co(H20)6]2+ +12NO2- +2CH3COOH + 1/2O2 → 2[Co(NO)2)6]3- +2CH3COO-+ 13H2O
after filtration of any precipitated potassium or ammonium salts, the sodium salt is precipitated by the addition of ethanol.

Purification MethodsDissolve the salt (ca 60g) in H2O (300mL), filter to obtain a clear solution, add 96% EtOH (250mL) with vigorous stirring. Allow the precipitate to settle for 2hours, filter it off, wash it with EtOH (4 x 25mL), twice with Et2O and dry it in air [Glemser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1541 1965]. It forms yellow to brown crystals which are very soluble in H2O, are decomposed by acid and form an insoluble K salt. Used for estimating potassium.
SODIUM COBALTINITRITE Preparation Products And Raw materials
Cupric tartrate Calcium phosphate monobasic CERIC SULFATE Cupric cyanide Calcium sulfite Cobalt hydroxide Sodium nitrite Cupric hydroxide Sodium hydrogen difluoride Magnesium hydride GOLD (I) CHLORIDE COBALT THIOCYANATE AMMONIUM NITRITE, 20% SOLN SODIUM COBALTINITRITE Cobaltous nitrate hexahydrate SODIUM COBALTINITRITE,SODIUM COBALTINITRITE REAGENT (ACS) Cobalt nitrate Sodium nitrate

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