| Identification | More | [Name]
Ceric ammonium nitrate | [CAS]
16774-21-3 | [Synonyms]
AMMONIUM CERIC NITRATE
AMMONIUM CERIUM(+4)NITRATE
AMMONIUM CERIUM(IV) NITRATE
AMMONIUM HEXANITRATE CERATE
AMMONIUM HEXANITRATO CERATE
AMMONIUM HEXANITRATOCERATE (IV)
CAN
CERIC AMMONIUM NITRATE
CERIUM(+4)DIAMMONIUM NITRATE
CERIUM AMMONIUM NITRATE
CERIUM(IV) AMMONIUM NITRATE
CERIUM(IV) DIAMMONIUM NITRATE
CEROUS AMMONIUM NITRATE
DIAMMONIUM CERIUM(IV) NITRATE
DI-AMMONIUM CERIUM(VI) NITRATE
DI-AMMONIUM-HEXANITRATOCERATE(IV)
ceric
diammonium,(oc-6-11)-cerate(2-hexakis(nitrato-o)-
hexakis(nitrato-O)-,diammonium,(OC-6-11)-Cerate(2-)
Ammonium hexanitratoerate | [EINECS(EC#)]
240-827-6 | [Molecular Formula]
CeH4N6O15 | [MDL Number]
MFCD00151121 | [Molecular Weight]
468.18 | [MOL File]
16774-21-3.mol |
| Chemical Properties | Back Directory | [Appearance]
yellow-orange crystals | [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. ]
0-6°C
| [solubility ]
919-1020g/l | [form ]
Powder/Solid | [color ]
Yellow to orange | [Specific Gravity]
1.045 | [Odor]
Slight characteristic odor | [PH]
0.61 (111.11g/l, H2O, 20℃) | [Stability:]
Stable. Oxidizer-contact with combustible material may cause fire. Incompatible with strong reducing agents, combustible material. | [Odor Threshold]
0.29 ppm | [Water Solubility ]
1410 G/L (20 ºC) | [Merck ]
14,1992 | [InChIKey]
WIBGOERAEYJBOT-UHFFFAOYSA-N | [CAS DataBase Reference]
16774-21-3(CAS DataBase Reference) | [EPA Substance Registry System]
16774-21-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,O | [Risk Statements ]
R8:Contact with combustible material may cause fire.
R36/37/38:Irritating to eyes, respiratory system and skin .
R36/38:Irritating to eyes and skin .
R41:Risk of serious damage to eyes.
R22:Harmful if swallowed. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S17:Keep away from combustible material .
S37/39:Wear suitable gloves and eye/face protection . | [RIDADR ]
UN 1477 5.1/PG 2
| [WGK Germany ]
3
| [F ]
8 | [TSCA ]
Yes | [HazardClass ]
5.1 | [PackingGroup ]
III | [HS Code ]
28461000 | [Toxicity]
LD50 orally in Rabbit: > 300 - 2000 mg/kg |
| Hazard Information | Back Directory | [Chemical Properties]
yellow-orange crystals | [Physical properties]
Reddish-orange monoclinic crystals; very soluble in water. | [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. | [Flammability and Explosibility]
Notclassified | [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. |
| Questions and Answers (Q&A) | Back Directory | [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.
Cerium Ammonium Nitrate(CAN), is the important material for making Chrome etchant which is a very important micro electronic circuit corroding materials for LCD; CAN is also applied in speciality glass and catalyst. In steels, Cerium degasifies and can help reduce Sulfides and Oxides, and it is a precipitation hardening agent in stainless steel. Cerium alloys are used in permanent magnets, and in Tungsten electrodes for gas Tungsten arc welding. It is also used in carbon-arc lighting, especially in the motion picture industry.
| [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.
| [Hazard]
Ceric ammonium nitrate is a powerful oxidizing agent. Precautions should be taken to avoid accidental contacts with orgnaic or other readily oxidizable substances.
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