Iodine pentoxide Property

Melting point:

300-350°C (dec.)

Density 

5.08 g/mL at 25 °C

storage temp. 

Store at +5°C to +30°C.

solubility 

insoluble in ethanol, ethyl ether, CS2

form 

Crystalline

Specific Gravity

5.08

color 

White to cream

PH

1.1 (100g/l, H2O, 25℃)

Water Solubility 

soluble

Sensitive 

Light Sensitive & Hygroscopic

Merck 

14,5019

Stability:

Stability Strong oxidizer - contact with combustible material may cause fire. Light and moisture sensitive. Incompatible with organic materials, combustible materials, water.

CAS DataBase Reference

12029-98-0(CAS DataBase Reference)

NIST Chemistry Reference

diiodine pentoxide(12029-98-0)

EPA Substance Registry System

Iodine oxide (I2O5) (12029-98-0)

Safety

Hazard Codes 

O,C

Risk Statements 

8-34

Safety Statements 

17-26-27-36/37/39-45

RIDADR 

UN 3085 5.1/PG 2

WGK Germany 

3

F 

8

TSCA 

Yes

HS Code 

2811 29 90

HazardClass 

5.1

PackingGroup 

II

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H272May intensify fire; oxidizer

H314Causes severe skin burns and eye damage

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P220Keep/Store away from clothing/…/combustible materials.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Iodine pentoxide Chemical Properties,Usage,Production

Physical Properties

White crystals; hygroscopic; density 4.98 g/cm3; decomposes around 300°C; highly soluble in water; soluble in nitric acid; insoluble in ethanol, ether and carbon disulfide.

Uses

Iodine pentoxide is used for analysis of carbon monoxide and for CO removal from air. It also is used as an oxidizing agent in other oxidation reactions.

Preparation

Iodine pentoxide is prepared by dehydration of iodic acid at 240°C.
2HIO3 → I2O5 + H2O

Reactions

Iodine pentoxide is a strong oxidizing agent and reacts with various oxidizable substances. It oxidizes carbon monoxide to carbon dioxide. The reaction is quantitative and used to measure carbon monoxide in the air:
I2O5 + 5CO → I2 + 5CO2
It reacts with hydrogen sulfide, forming sulfur dioxide:
3I2O5 + 5H2S → 3I2 + 5SO2 + 5H2O
Oxidation reaction also occurs with hydrogen chloride, metal hydrides and a number of metal salts. It dissolves in water reacting to form iodic acid:
I2O5 + H2O → 2HIO3
Dissociation into iodine and oxygen commences when heated above 270°C.

Chemical Properties

needle shaped crystals

Physical properties

White crystals; hygroscopic; density 4.98 g/cm³; decomposes around 300°C;highly soluble in water; soluble in nitric acid; insoluble in ethanol, ether andcarbon disulfide.

Uses

Iodine (V) oxide is used as an oxidizing agent to remove carbon monoxide from gas.

Uses

Oxidizes carbon monoxide to carbon dioxide with the formn of iodine (Ditte's reaction, which proceeds rapidly at 65° or above, but slowly at room temp). This reaction is used in gas analysis and for removing carbon monoxide from the air (in respirators preferably in presence of some H2SO4).

Definition

ChEBI: Diiodine pentaoxide is an iodine oxide.