For professionals in the chemical industry, a deep understanding of specific compounds is essential for informed decision-making. Ammonium Iron(III) Sulfate, identified by its CAS number 10138-04-2, is a chemical entity that, while perhaps not as widely known as some bulk commodities, holds significant importance in various specialized applications. This article aims to illuminate the key properties and industrial relevance of this inorganic salt for procurement managers, R&D scientists, and formulation chemists.

Chemical Identity and Nomenclature

The chemical name Ammonium Iron(III) Sulfate refers to a double salt composed of ammonium sulfate and ferric sulfate. Its molecular formula is often represented as NH4Fe(SO4)2 or, more specifically for the dodecahydrate form which is common, FeNH4(SO4)2·12H2O. It is also known by several synonyms, including ferric ammonium sulfate, iron alum, and ammonium ferric sulfate. Recognizing these various names is crucial when searching for suppliers and technical data for CAS 10138-04-2.

Key Physical and Chemical Properties

Ammonium Iron(III) Sulfate typically presents as pale violet crystals. This distinct color is a primary visual identifier. Key physical and chemical properties include:

• Appearance: Pale violet crystals.
• Solubility: It is very soluble in water, which is a critical property for its use in aqueous solutions and processes. It is generally insoluble in alcohol.
• Density: The density is around 0.87 g/m³ at 25°C for the anhydrous form, though hydrated forms might have different values.
• Stability: It is considered stable under standard storage conditions. However, like many hydrated salts, it can lose water of crystallization upon heating. The dodecahydrate form, for instance, loses all water molecules at around 230°C.
• Aqueous Solution pH: Aqueous solutions tend to be acidic due to hydrolysis.
• Melting/Boiling Point: Boiling point is cited around 330°C at 760 mmHg. Melting point data varies depending on hydration state, with some sources listing around 39-41°C for a specific form.

Industrial Significance and Applications

The unique properties of Ammonium Iron(III) Sulfate lend themselves to several critical industrial applications:

• Textile Industry: As a mordant, it aids in the fixation of dyes to fabrics, enhancing color vibrancy and durability. This role is crucial for achieving high-quality textile products.
• Analytical Reagent: Its oxidizing capabilities make it invaluable in laboratories for various titration methods, ensuring accurate chemical analyses.
• Other Potential Uses: Research and development activities may uncover further applications in niche chemical synthesis, material science, or specialized treatment processes.

Sourcing High-Quality Ammonium Iron(III) Sulfate

When you need to buy Ammonium Iron(III) Sulfate (CAS 10138-04-2), it is essential to partner with a reliable manufacturer or supplier that can provide consistent quality. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to bridging the gap between your needs and dependable chemical sources. We work with reputable producers to ensure you receive products that meet rigorous standards, complete with necessary documentation. Contact us to get a quote and explore how we can support your procurement of this industrially significant compound.