Ceric ammonium nitrate Property

Melting point:

107-108 °C

Boiling point:

83°C

Density 

1.10 g/mL at 20 °C

vapor density 

2.3 (vs air)

vapor pressure 

6.4 kPa (@ 20°C)

storage temp. 

Store at +5°C to +30°C.

solubility 

919-1020g/l

form 

Powder/Solid

Specific Gravity

1.045

color 

Yellow to orange

PH

0.61 (111.11g/l, H2O, 20℃)

Odor

Slight characteristic odor

Odor Threshold

0.29 ppm

Water Solubility 

1410 G/L (20 ºC)

Merck 

14,1992

Stability:

Stable. Oxidizer - contact with combustible material may cause fire. Incompatible with strong reducing agents, combustible material.

InChIKey

WIBGOERAEYJBOT-UHFFFAOYSA-N

CAS DataBase Reference

16774-21-3(CAS DataBase Reference)

EPA Substance Registry System

Cerate(2-), hexakis(nitrato-.kappa.O)-, diammonium, (OC-6-11)- (16774-21-3)

Safety

Hazard Codes 

Xi,O,Xn

Risk Statements 

8-36/37/38-36/38-41-22

Safety Statements 

26-36-17-37/39

RIDADR 

UN 1477 5.1/PG 2

WGK Germany 

3

F 

8

TSCA 

Yes

HS Code 

3822 00 00

HazardClass 

5.1

PackingGroup 

III

Toxicity

LD50 orally in Rabbit: > 300 - 2000 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H272May intensify fire; oxidizer

H290May be corrosive to metals

H302Harmful if swallowed

H314Causes severe skin burns and eye damage

H317May cause an allergic skin reaction

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

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

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

P273Avoid release to the environment.

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.

Ceric ammonium nitrate Chemical Properties,Usage,Production

Chemical Properties

yellow-orange crystals

Physical properties

Reddish-orange monoclinic crystals; very soluble in water.

Uses

Ceric ammonium nitrate is used as a volumetric oxidizing reagent in many oxidation-reduction titrations. Cerium(IV) ion is a strong oxidant similar to permanganate ion. It is the most widely-used primary standard among all Ce(IV) compounds. Other applications of this compound are in organic oxidation reactions; and as a catalyst in polymerization of olefins.

Uses

Used as oxidimetric standard.

Uses

A strongly oxidizing cerium preparation

Preparation

Ceric ammonium nitrate is prepared by electrolytic oxidation of cerous nitrate in nitric acid to ceric nitrate, followed by the addition of ammonium nitrate solution. It is separated from the solution by crystallization. It may be prepared alternatively by dissolving cerium(II) oxide, CeO•H2O in concentrated nitric acid followed by treatment with ammonium nitrate.

Reactions

The most important reactions of Ceric ammonium nitrate are the oxidations, attributed to Ce4+ ion in the solution. The standard reduction potential E° for the formal half-reaction: Ce4+ + e– Ce3+ in 1 M H2SO4 is 1.44 V. The oxidizing strength is comparable to permanganate (MnO4- ), bromate (BrO3-), and dichromate (Cr2O72-) anions. Analytical applications involve reactions with reductants such as sodium oxalate (Na2C2O4) or arsenic (III) oxide (As2O3) in the presence of iron, with ferroin (1,10–phenanthroline iron(II) complex) as the indicator.

General Description

Ammonium cerium(IV) nitrate (Cerium(IV) ammonium nitrate, CAN) is a versatile reagent for oxidative electron transfer reactions. It participates in various novel carbon-carbon bond-forming reactions involved in one-pot synthesis of dihydrofurans, tetrahydrofurans and aminotetralins. Iodine/ammonium cerium(IV) nitrate has been employed in direct α-iodination of various ketones to afford the corresponding α-iodo ketones. CAN has been reported as an powerful one-electron oxidant. It also participates in various carbon-heteroatom bond-forming reactions.

Hazard

Ceric ammonium nitrate is a powerful oxidizing agent. Precautions should be taken to avoid accidental contacts with orgnaic or other readily oxidizable substances.

Flammability and Explosibility

Not classified

Purification Methods

Ceric ammonium nitrate (125g) is warmed with 100mL of dilute HNO3 (1:3 v/v) and 40g of NH4NO3 until it dissolves, and filtered through a sintered-glass funnel. The solid which separates on cooling in ice is filtered off on a sintered funnel (at the pump) and air is sucked through the solid for 1-2 hours to remove most of the nitric acid. Finally, the solid is dried at 80-85o.