13600-98-1

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 NO: 13600-98-1
• Molecular Formula: CoN6Na3O12
• Molecular Weight: 403.94
• 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
• Article Data: 0

Chemical Properties

• Melting Point: 220 °C (dec.)(lit.)
• Appearance: Orange to orange-brown/Solid
• Storage Temp.: Store below +30°C.
• Solubility: 720g/l
• Water Solubility: Soluble in water
• Stability: Stable. Contact with conbustible material may cause fire. Incompatible with strong acids, organic materials, amines.
• Merck: 13,8677
• CAS DataBase Reference: SODIUM COBALTINITRITE(CAS DataBase Reference)
• NIST Chemistry Reference: SODIUM COBALTINITRITE(13600-98-1)
• EPA Substance Registry System: SODIUM COBALTINITRITE(13600-98-1)

Safety Data

• Hazard Codes: O,Xn
• 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
• Hazardous Substances Data: 13600-98-1(Hazardous Substances Data)

Usage

Chemical Properties

SODIUM COBALTINITRITE is deep yellow to brown crystalline powder

Uses

Different sources of media describe the Uses of 13600-98-1 differently. You can refer to the following data:
1. Nitrosation reagent for the conversion of aromatic amines to 1,3-diaryltriazenes with excellent yield.1
2. SODIUM COBALTINITRITE is used in the detection Potassium.
3. For the detection of potassium with which it forms a slightly soluble compound.

Preparation

Sodiumhexanitrocobaltate(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-+ 13H2Oafter filtration of any precipitated potassium or ammonium salts, the sodium salt is precipitated by the addition of ethanol.

Purification Methods

Dissolve 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.

InChI:InChI=1/Co.6HNO2.3Na/c;6*2-1-3;;;/h;6*(H,2,3);;;/q;;;;;;;3*+1/p-6

Synthetic route

sodium hexanitrocobaltate(III) (13600-98-1) + Tris(2-pyridylmethyl)ammonium perchlorate (115482-73-0) → chloro(tris(2-pyridylmethyl)amine)aquacobalt(III) diperchlorate*3.5H2O (115512-30-6)

Conditions

Yield

With hydrogenchloride; perchloric acid In hydrogenchloride byproducts: NO2; dropping aq. soln. of the perchlorate to soln. of the cobaltate, red brown, NO2 evolution on heating (50°C, 0.5h), cooling (ice-bath), pptn. of nitro complexes, 80°C, addn. of HCl, heating(30 min), addn. of HClO4, heating (30 min), evapn.; chromy. on Sephadex with 0.05 M HCl, purple band, eluting, oil, dissolving in H2O, chromy. on Dowex, evapn. in an air stream, elem. anal.;

sodium hexanitrocobaltate(III) (13600-98-1) + N,N-bis(2-pyridylmethyl)ethylenediamine hydrochloride + sodium perchlorate → dichloro(N,N-bis(2-pyridylmethyl)ethylenediamine)cobalte(III)perchlorate-water + chloro(N,N-bis(2-pyridylmethyl)ethylenediamine)aquacobalt(III) diperchlorate*H2O

Conditions

Yield

With hydrogenchloride In hydrogenchloride byproducts: NO2; slowly addn. of aq. soln. of uns-penp*HCl to the cobaltate soln., red-brown, NO2 evolution during heating (50°C), addn. of NaClO4, cooling, pptn. of nitro complexes, soln. in concd. HCl, heating (80°C, 0.5h),cooling, evapn., purple solid; chromy. on Sephadex, 2 bands, collecting 2nd band, evapn. in an air stream, dissolving in H2O,chromy. on Dowex, evapn. in air stream, elem. anal.;

aluminum oxide (1333-84-2, 1344-28-1) + nickel nitrate(II) nonahydrate + sodium hexanitrocobaltate(III) (13600-98-1) → Ni-Co/Al2O3

Conditions	Yield
Stage #1: aluminum oxide; nickel nitrate(II) nonahydrate; sodium hexanitrocobaltate(III) With ammonia In water Stage #2: With sodium tetrahydroborate; sodium dodecyl-sulfate; sodium hydroxide at 150 - 400℃; for 8.5h; pH=12; Calcination;