Name: China Factory Supply High Quality Sodium phosphate dibasic anhydrous CAS 7558-79-4
Brand: Wuhan Fortuna Chemical Co., Ltd.

Specifications of Sodium phosphate dibasic anhydrous CAS 7558-79-4

Item	Specifications	Results
Appearance	White powder	Conform
Loss on drying	≤2.0%	0.19%
Assay	≥98.0%	99.15%

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Parameters of Sodium phosphate dibasic anhydrous CAS 7558-79-4

Product parameters
Cas number:	7558-79-4
Appearance:	White powder
Purity:	98%min
Package details:	25kg/bag
Brand:	Fortunachem

Sodium Phosphate, Dibasic is an inorganic salt and a sodium salt of phosphoric acid. Its chemical formula is typically written as Na₂HPO₄.

"Dibasic" Meaning: The "di" means "two," indicating that two of the three hydrogen (H+) ions in phosphoric acid (H₃PO₄) have been replaced by sodium (Na+) ions.
Appearance: It is a white, crystalline powder that is highly soluble in water.
Key Property: It is an excellent buffer. This means it helps solutions resist changes in pH when small amounts of acid or base are added. It is often used in combination with its counterpart, Sodium Phosphate, Monobasic (NaH₂PO₄), to create a buffer system with a specific, stable pH.

You will find it in several forms, including the anhydrous (no water) form and a common hydrate form with 7 water molecules (Na₂HPO₄ • 7H₂O), which is also known as heptahydrate.

Common Uses of Sodium Phosphate, Dibasic

Due to its properties as a buffer, sequestrant, and emulsifier, it has wide-ranging applications in food, medicine, and industry.

1. Food Industry (as a Food Additive)

In food, it is recognized by the E-number E339(ii). Its functions include:

pH Control and Buffering: Regulates acidity in processed foods, cheeses, and sauces to ensure a consistent taste and texture.
Emulsifier: Helps blend ingredients that normally don't mix well, like oil and water, preventing them from separating. This is crucial in processed cheeses, milk creamers, and meat products.
Stabilizer and Thickener: Improves the texture and mouthfeel of foods like puddings, jellies, and canned soups.
Moisture Retention: Especially in meat and poultry products, it helps the protein retain water, resulting in a juicier product and preventing weight loss during cooking.

2. Medical and Pharmaceutical Uses

Laxative (Bowel Prep): This is one of its most well-known medical uses. It is a osmotic laxative, meaning it draws water into the colon from surrounding tissues. This softens the stool and stimulates bowel movements. It is commonly used to cleanse the bowel before a colonoscopy or other surgeries.
Electrolyte Supplement: It can be used in medical settings to correct low levels of phosphate (hypophosphatemia) or sodium in the blood.
Buffer in Medications: It is used as a buffering agent in many pharmaceutical preparations, including:

Injectable medicines: To ensure the solution matches the pH of blood.
Eye drops and nasal sprays: To make them comfortable and non-irritating.
Tablets: to control the release of the active ingredient.

3. Laboratory and Industrial Uses

Laboratory Buffer: It is a fundamental component of common laboratory buffers, such as Phosphate Buffered Saline (PBS) and other phosphate buffers, which are essential for maintaining a stable environment for biological and chemical reactions (e.g., in cell culture, DNA analysis, and protein chemistry).
Water Softener: Binds to calcium and magnesium ions in water, preventing scale formation in detergents and industrial cleaning systems.
Nutrient Source: Used in fermentation processes and as a nutrient in certain specialized fertilizers.

Important Safety and Health Considerations

While generally recognized as safe (GRAS) in small amounts in food, there are important health considerations:

Laxative Use: The use of oral sodium phosphate products for bowel preparation requires careful medical supervision. Overuse or use in individuals with kidney problems, heart conditions, or dehydration can lead to serious electrolyte imbalances (like high phosphate and sodium levels), kidney damage, and other complications. For this reason, many over-the-counter (OTC) laxatives containing sodium phosphates have been withdrawn or carry strong warnings.
Kidney Health: People with impaired kidney function may have trouble excreting excess phosphate, which can be harmful.
High Dietary Intake: A diet consistently high in phosphates (from processed foods) may be linked to negative health outcomes, particularly for individuals with existing kidney disease, as it can contribute to bone demineralization and cardiovascular issues.

Summary

Aspect	Description
What it is	A sodium salt of phosphoric acid (Na₂HPO₄), a white, water-soluble powder.
Key Property	An effective pH buffer and sequestrant.
Primary Uses	1. Food Additive (E339(ii)): For emulsification, moisture retention, and pH control. 2. Medicine: As a powerful laxative for bowel prep and an electrolyte supplement. 3. Laboratory: A key ingredient in buffer solutions like PBS.

In conclusion, Sodium Phosphate, Dibasic is a versatile chemical with critical roles from keeping our processed foods stable to enabling life-saving medical procedures and scientific research. However, its medicinal use, particularly as a laxative, must be approached with caution under professional guidance.