Metalic Fine Chem

Di Ammonium Phosphate (DAP)
Also known as Di Ammonium Hydrogen Phosphate or Ammonium Phosphate Dibasic

Di Ammonium Phosphate is produced through the reaction of Ammonia Gas and Phosphoric Acid. We manufacture LR Grade and Pure Grade Di Ammonium Phosphate in bulk quantities and supply it across India. DAP is utilized in various industries, including Food & Beverages, Agriculture, and Animal Feed, among others. The Di Ammonium Phosphate manufactured by us is also used in the fermentation process at several wineries in Nashik.

Applications / Uses of Di Ammonium Phosphate (DAP):

1. Food Production Industry:

   • Di Ammonium Phosphate is widely used as a nutritional supplement and buffering agent in food production.
   • It functions as a buffering agent in baked goods to enhance texture.

2. Beverage Industry:

   • Di Ammonium Phosphate is used as a nutritional supplement in beverages.
   • It serves as a yeast nutrient in wine-making and brewing mead, promoting the fermentation process.

3. Agriculture / Animal Feed Industry:

   • Di Ammonium Phosphate is commonly used as a nutritional supplement in both agriculture and animal feed.
   • It is added to feed additives to improve nutritional value.
   • DAP acts as a nitrogen and phosphorus supplement in fertilizers for vegetables, fruits, rice, and wheat.

4. Other Industries:

   • DAP is employed as a fire retardant in fire extinguishers to prevent fire spread.
   • It also serves as a pH regulator in paint, controlling the precipitation of alkali-soluble and acid-insoluble colloidal dyes on wool.

Properties of Di Ammonium Phosphate (DAP):

• CAS Number: 7783-28-0
• Molecular Formula: (NH₄)₂HPO₄
• Molecular Weight: 132.06 g/mol
• Appearance: White Crystals
• Assay: > 99%
• Packing Details: 25 kg HDPE Bags

Specifications of Di Ammonium Phosphate (DAP):

• Formula: (NH₄)₂HPO₄
• Molecular Weight: 132.06 g/mol
• Appearance: White Crystals
• Assay: > 99%
• P₂O₅: > 53%
• pH of 5% Solution: 7.5 – 8.5
• Chloride: < 0.001%
• Sulfate: < 0.02%
• Lead: < 0.001%
• Iron: < 0.005%

Trisodium Phosphate Crystal is a versatile and highly effective chemical compound widely used in various applications, including cleaning, food processing, and water treatment. This white, crystalline powder is known for its excellent solubility in water and ability to act as a pH buffer, making it ideal for maintaining optimal acidity levels in different formulations. Its strong cleaning properties make it a popular choice in household and industrial cleaning products, while its role as a food additive enhances the texture and stability of processed foods. Safe and easy to handle, Trisodium Phosphate Crystal is an essential ingredient for both commercial and residential use.

Monopotassium Phosphate Powder is a highly soluble, crystalline compound that serves as an essential source of potassium and phosphorus for various applications. This product is ideal for use in agriculture, horticulture, and hydroponics, promoting healthy plant growth and enhancing nutrient uptake. Its balanced nutrient profile supports flowering and fruiting in plants, making it a preferred choice for growers seeking to optimize crop yields. Additionally, Monopotassium Phosphate Powder is suitable for use in food and beverage formulations, providing a reliable source of essential minerals.

Monoammonium phosphate (MAP) is a widely used source of phosphorus (P) and nitrogen (N).* It’s made of two constituents common in the fertilizer industry and contains the most phosphorus of any common solid fertilizer.

Production

MAP’s manufacturing process is relatively simple. While there are multiple methods, two common ways include:

A one-to-one ratio of ammonia (NH₃) and phosphoric acid (H₃PO₄) is reacted and the resulting slurry of MAP is solidified in a granulator

Introducing the two starting materials in a pipe-cross reactor, where the reaction generates heat to evaporate water and solidify MAP

An advantage of manufactured MAP is that lower-quality H₃PO₄ can be used compared with other P fertilizers often requiring a more pure grade of acid. The phosphorus pentoxide (P₂O₅) equivalent content of MAP varies from 48 to 61 percent, depending on the amount of impurity in the acid. The most common fertilizer composition is 11-52-0.

Chemical properties

• Chemical formula: NH₄H₂PO₄
• P₂O₅ range: 61%
• N range: 12%
• Water solubility (20 degrees): 370 g/L
• Solution pH: 4 to 4.5

Agricultural use

MAP has been an important granular fertilizer for many years. It’s water-soluble and dissolves rapidly in adequately moist soil. Upon dissolution, the two basic components of the fertilizer separate again to release ammonium (NH₄⁺) and phosphate (H₂PO₄⁻), both of which plants rely on for healthy, sustained growth.

The pH of the solution surrounding the granule is moderately acidic, making MAP an especially desirable fertilizer in neutral- and high-pH soils. Agronomic studies show that, under most conditions, no significant difference exists in P nutrition between various commercial P fertilizers under most conditions.

Growers apply granular MAP in concentrated bands beneath the soil surface in proximity of growing roots or in surface bands. It’s also commonly applied by spreading across the field and mixing into the surface soil via tillage.

In powdered form, MAP is an important component of suspension fertilizers. When MAP is made with especially pure H₃PO₄, it readily dissolves into a clear solution dispersed as a foliar spray or added to irrigation water. The P₂O₅ equivalent content of high-purity MAP is usually 61 percent.

Management practices
The slight acidity associated with this fertilizer reduces the potential for NH₃ loss to the air. MAP can be placed in close proximity to germinating seeds without concern for NH₃ damage. However, MAP used in foliar spray or added to irrigation water, shouldn’t be mixed with calcium or magnesium fertilizers.

MAP has good storage and handling properties. Some of the chemical impurities (such as iron and aluminum) naturally serve as a conditioner to prevent caking. Highly pure MAP may have a conditioner added or may require extra care in handling to prevent clumping and caking.

As with all P fertilizers, employ appropriate management practices to minimize any nutrient loss to surface or drainage water.

A high purity source of MAP is used as a feed ingredient for animals. The NH₄⁺ is synthesized into protein and the H₂PO₄⁻ supports a variety of metabolic functions in animals.

Learn more about how management and practices support Advanced Crop Nutrition.

Non-agricultural uses

MAP is used in dry chemical fire extinguishers commonly found in offices, schools and homes. The extinguisher spray disperses finely powdered MAP, which coats the fuel and rapidly smothers the flame.

MAP is also known as ammonium phosphate monobasic and ammonium dihydrogen phosphate

Source: Nutrient Source Specifics (No. 9), International Plant Nutrition Institute.

Monosodium Phosphate ($NaH_2PO_4$), also known as anhydrous sodium dihydrogen phosphate, is a versatile inorganic compound. While it can exist in hydrated forms (monohydrate and dihydrate), the powder form is highly valued for its high concentration and efficiency in industrial applications.

 

Physical and Chemical Properties

Monosodium Phosphate Powder is recognized for its high solubility and its role as a powerful buffering agent.

 

•  Appearance: A white, odorless, crystalline powder or granular solid.

   

• Solubility: Highly soluble in water ($59.9$ g/100 mL at 20°C) but practically insoluble in organic solvents like ethanol.

• Acidity (pH): A 1% aqueous solution typically has a pH between 4.1 and 4.7, making it a "mildly acidic" salt compared to other sodium phosphates.

• Thermal Data: * Melting Point: Approximately 190°C.

  • Decomposition: When heated to high temperatures (above 240°C), it decomposes into sodium acid pyrophosphate and eventually sodium metaphosphate.

Key Industrial & Commercial Applications

Because it can stabilize pH levels and interact with metal ions, it is used across a wide variety of sectors:

• Water Treatment: It is used to prevent scale formation and corrosion in boiler systems and cooling towers by sequestering hardness ions like calcium and magnesium.

  Food & Beverage Industry: Used as an emulsifier, a pH buffer, and a leavening acid in products like evaporated milk, animal feed, and specialized baking powders.

• Metal Surface Treatment: It acts as a primary component in metal cleaning and "acidic pickling" processes to remove oxides and prepare surfaces for coating or painting.

• Textile & Leather: Used in the dyeing and printing of fabrics to maintain a constant acidic environment, ensuring uniform color absorption.

•  Pharmaceuticals: Frequently used as an excipient in tablet formulations and as an osmotic laxative in clinical settings.

Storage and Handling

Monosodium Phosphate is generally considered safe but requires specific storage conditions to maintain its powdered form:

 

• Hygroscopic Nature: The anhydrous powder easily absorbs moisture from the air, which can cause "caking" or clumping.

• Storage: Must be stored in a cool, dry, and well-ventilated warehouse. Keep containers tightly sealed and away from incompatible materials like strong bases.

• Safety: While non-toxic, the powder can be an irritant to the eyes and respiratory tract. Standard PPE, including safety glasses and a dust mask, is recommended during bulk handling.