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

Odor

Odorless

PH

5 (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 Reference

13600-98-1(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

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

SODIUM COBALTINITRITE Usage And Synthesis

Chemical Properties

SODIUM COBALTINITRITE is deep yellow to brown crystalline powder

Uses

SODIUM COBALTINITRITE is used in the detection Potassium.

Uses

For the detection of potassium with which it forms a slightly soluble compound.

Uses

Nitrosation reagent for the conversion of aromatic amines to 1,3-diaryltriazenes with excellent yield.1

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^-+ 13H2O
after 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.

SODIUM COBALTINITRITE(13600-98-1)Related Product Information

• Sodium hydrogen difluoride
• Calcium phosphate monobasic
• Calcium sulfite
• COBALT THIOCYANATE
• Cupric cyanide
• Cobalt hydroxide
• Cupric tartrate
• Sodium nitrite
• Sodium nitroprusside dihydrate
• Pentyl nitrite
• Isobutyl nitrite
• Cupric hydroxide
• Magnesium hydride
• GOLD (I) CHLORIDE
• CERIC SULFATE
• Isoamyl nitrite
• Nitrite ion standard solution
• SODIUM NITRITE-15N