Description
Ceric Ammonium Sulphate
Dihydrate | Oxidizing reagent for analysis and synthesis. This note covers the dihydrate identity only — anhydrous or unspecified-hydrate material needs its own identity and formula.
Ceric Ammonium Sulphate Dihydrate, also known as ammonium cerium(IV) sulphate dihydrate, is a cerium(IV) reagent used in redox analysis and selected organic oxidations.
Identity & general properties
- Product Form : Ceric Ammonium Sulphate Dihydrate
- CAS Number : 10378-47-9
- Chemical Formula : (NH₄)₄[Ce(SO₄)₄]·2H₂O
- Molecular Weight : Approx. 632.55 g/mol
- Cerium Oxidation State : Cerium(IV)
- Appearance : Yellow to yellow-orange crystalline solid
- Solution Behaviour : Hydrolysis can occur in water; use the acidic medium specified by the analytical or reaction method
Reference data only — this identity applies to the dihydrate only. These values are not a batch COA or a guaranteed sales specification.
Applications
- Cerimetric analysis — preparation of standardized cerium(IV) titrants for validated redox methods, including certain iron(II) assays.
- Organic synthesis — an oxidizing reagent for selected aromatic oxidations and quinone-forming transformations; suitability depends on the substrate and reaction conditions.
- Polymer research — reported as an initiator in selected radical polymerisation systems, including pectin/PEGMA hydrogel research (a research application, not a universal process claim).
Hydrolysis can occur in water. Use the acid medium, standardisation and storage requirements specified by the validated method — weighing the solid alone does not establish a certified titrant concentration. Ceric Ammonium Sulphate is not the same as ceric ammonium nitrate or ceric sulphate; do not substitute between them without checking chemical identity, assay basis and method suitability.
Handling & Storage
Oxidizing reagent. Avoid skin and eye contact and inhalation of dust. Use suitable ventilation, gloves and eye protection. Store tightly closed in a cool, dry, ventilated area; prevent contamination. Follow the supplied SDS for incompatibilities, disposal and transport requirements — this information is not an SDS and does not establish pharmaceutical or electronic grade.
Request a Quotation
Discuss your requirement with Sontara Organo Industries. Share your application, required assay, impurity limits, quantity, preferred pack and delivery location for specification review and a quotation. Request the approved specification, current SDS and batch COA.
For professional chemical use. Refer to the current product SDS. This information does not certify ACS-grade compliance.
Sources & Technical Reading
- Merck / Supelco 102273 — Dihydrate identity and reference data.
- Alpha Chemika AL0338 — Dihydrate appearance.
- Scharlab CE0060 — Water-hydrolysis note.
- WHO International Pharmacopoeia — Ferrous fumarate monograph, assay.
- Periasamy, M.; Radhakrishnan, U. Cerium(IV) Ammonium Sulfate. e-EROS, 2001. DOI: 10.1002/047084289X.rc040.
- Sigma-Aldrich 221759 — Polymerisation research application.
- Fisher Scientific / Thermo Fisher SDS 40194, Revision 8 February 2024.
- ACS Reagent Chemicals. Ceric Ammonium Sulfate Dihydrate. Update 1 April 2025. DOI: 10.1021/acsreagents.4087.20250401.
References describe general chemistry, analytical methods or other suppliers’ products; they do not certify Sontara quality. ACS monograph access does not imply ACS-grade compliance.
