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CYANOGEN IODIDE

CYANOGEN IODIDE
CYANOGEN IODIDE structure
CAS No.
506-78-5
Chemical Name:
CYANOGEN IODIDE
Synonyms
ICN;CNI;cN1A;cN-IA;NT5C1A;Jodcyan;IODOCYANIDE;Cyano iodide;IODINE CYANIDE;CYANOGEN IODIDE
CBNumber:
CB3345368
Molecular Formula:
CIN
Formula Weight:
152.92
MOL File:
506-78-5.mol

CYANOGEN IODIDE Properties

Melting point:
146 °C
Boiling point:
154.34°C (rough estimate)
Density 
1.840
storage temp. 
Refrigerator (+4°C)
form 
Crystalline Powder
color 
Beige to light brown or light pink
Water Solubility 
soluble H2O, EtOH, eth [CRC10]
Exposure limits
Because cyanogen iodide is a solid with very low vapor pressure, it does not present any inhalation hazard.
SAFETY
  • Risk and Safety Statements
RIDADR  3290
HazardClass  6.1(a)
PackingGroup  I
HS Code  28530090

CYANOGEN IODIDE Chemical Properties,Uses,Production

Chemical Properties

Iodine cyanide (cyanogen iodide) appears as light pink crystalline or brown-coloured powder and is soluble in water. It is stable but sensitive to light. It is incompatible with strong acids, strong bases, and strong oxidising agents. Cyanogen iodide decomposes on contact with acids, bases, and ammonia alcohols and on heating producing toxic gases including hydrogen cyanide. It reacts with carbon dioxide or slowly with water to produce hydrogen cyanide.

Chemical Properties

Cyanogen iodide is a combustible, white crys- talline solid. Very pungent odor.

Uses

Generally for destroying all lower forms of life. In taxidermy for preserving insects, butterflies, etc.

Uses

Cyanogen bromide is used in taxidermy for preserving insects, butterflies, and so on (Merck 1989).

General Description

White needles with a very pungent odor. Used in taxidermists' preservatives and generally for destroying all lower forms of life. Toxic by inhalation or ingestion.

Air & Water Reactions

Water soluble.

Reactivity Profile

Phosphorus(molten) plus CYANOGEN IODIDE reacts with incandescence to produce phosphorus iodide, [NFPA 491M, 1991]. Benzene and cyanogen halides yield HCl as a byproduct (Hagedorn, F. H. Gelbke, and Federal Republic of Germany. 2002. Nitriles. In Ullman Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA.).

Health Hazard

Causes convulsions, paralysis and death from respiratory failure. Highly toxic; strong irritant to eyes and skin. (Non-Specific -- Cyanide or Cyanide Mixture, Dry): Poisonous, may be fatal if swallowed or absorbed through skin. Contact may cause burns to the skin and eyes. Fire may produce irritating or poisonous gases.

Health Hazard

Cyanogen bromide is a highly poisonous substance. Toxic routes are oral intake and skin absorption. Acute toxic symptoms on test animals were convulsion, paralysis, and respiratory failure. Ingestion of a 5-g amount could be fatal to humans.
LDLo value, oral (cats): 18 mg/kg
LDLo value, subcutaneous (dogs): 19 mg/kg
Cyanogen iodide is an irritant to skin.

Fire Hazard

When heated to decomposition, CYANOGEN IODIDE emits very toxic fumes of nitrogen oxides, cyanide, and iodide. Avoid phosphorus.

Safety Profile

A poison by ingestion and subcutaneous routes. Violent reaction with P. See other cyanogen entries; CYANIDE and IOdiDES. When heated to decomposition it emits very toxic fumes of NOx, CN-, and I-

Potential Exposure

Reacts slowly with water releasing hydrogen cyanide. Incompatible with phosphorus (molten); reacts with incandescence to produce phosphorus iodide . Contact with alcohols, acids, ammonia, carbon dioxide or alkaline material and bases produces toxic gases including hydrogen cyanide. Incompatible with nitriles.

Shipping

UN2928 Toxic solids, corrosive, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, 8-Corrosive material, Technical Name Required. UN3290 Toxic solid, corrosive, inorganic, n.o.s., Hazard class: 6.1; Labels: 6.1-Poisonous materials, 8-Corrosive material. UN1588 Cyanides, inorganic, solid, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials

Purification Methods

This compound is POISONOUS, and the precautions for cyanogen bromide (above) apply here. The reagent (ca 5.9g) is dissolved in boiling CHCl3 (15mL), filtered through a plug of glass wool into a 25mL Erlenmeyer flask. Cool to room temperature for 15minutes, then place it in an ice-salt bath and cool to -10o. This cooling causes a small aqueous layer to separate as ice. The ice is filtered with the CNI, but melts on the filter and is also removed with the CHCl3 used as washing liquid. The CNI which is collected on a sintered glass funnel is washed 3x with CHCl3 (1.5mL at 0o) and freed from last traces of solvent by placing it on a watch glass and exposing it to the atmosphere in a good fume cupboard at room temperature for 1hour to give colourless needles (ca 4.5g), m 146-147o (sealed capillary totally immersed in the oil bath). The yield depends slightly on the rapidity of the operation; in this way loss by sublimation can be minimised. If desired, it can be sublimed under reduced pressure at temperatures at which CNI is only slowly decomposed into I2 and (CN)2. The vacuum will need to be renewed constantly due to the volatility of CNI. [Bak & Hillebert Org Synth Coll Vol IV 207 1963.]

Incompatibilities

Reacts slowly with water releasing hydrogen cyanide. Incompatible with phosphorus (molten); reacts with incandescence to produce phosphorus iodide . Contact with alcohols, acids, ammonia, carbon dioxide or alkaline material and bases produces toxic gases including hydrogen cyanide. Incompatible with nitriles.

Waste Disposal

A suitable method for destroying cyanogen iodide may consist of treatment with caustic soda, followed by adding sodium hypochlorite (laundry bleach) to oxidize the cyanide to nontoxic cyanate.

CYANOGEN IODIDE Preparation Products And Raw materials

Raw materials

Preparation Products

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