Hangzhou Leap Chem Co., Ltd. is one of the most professional manufacturers and suppliers of sodium dihydrogen phosphate dihydrate丨cas 13472-35-0 in China. Welcome to wholesale bulk high quality chemical products at competitive price from our factory. If you have any enquiry about custom service, please feel free to email us.
Specifications
|
Grade: |
EP9.6 |
|
Appearance: |
White or almost white powder or colourless crystals |
|
Assay: |
98.0% to 100.5% (calculated on the dried basis) |
|
Solubility: |
Very soluble in water, very slightly soluble in ethanol (96%) |
|
Identification |
|
|
A: |
Solution S is slightly acid |
|
B: |
Solution S gives reaction of phosphates |
|
C: |
Solution S gives reaction (a) of sodium |
|
Tests |
|
|
Appearance of solution: |
Solution S is clear and colourless |
|
pH: |
4.2 to 4.5 |
|
Reducing substances: |
The color of the permanganate is not completely discharged |
|
Chlorides: |
200 ppm max |
|
Sulphates: |
300 ppm max |
|
Arsenic: |
2 ppm max |
|
Iron: |
10 ppm max |
|
Loss on drying: |
21.5% ~ 24.0% |
Manufacturing Informatio
|
Parameter |
Specification |
|
Capacity |
10MT/month |
|
Frequency |
|
|
Main Export Countries |
|
|
Capacity/Batch |
|
|
Experience |
Production since 2012 |
|
Stock |
Sodium dihydrogen phosphate dihydrate丨CAS 13472-35-0 is a hydrated, acidic sodium phosphate salt widely used in laboratory, industrial, pharmaceutical, and food-grade applications due to its buffering capacity, water solubility, and biocompatibility.
Applications
1. Buffering Agent in Laboratories and Industry
● Commonly used in phosphate buffer systems:
o pH control in biochemical and chemical reactions
o Component of PBS (phosphate-buffered saline)
● Especially important in enzyme assays, cell culture, and electrophoresis
● Acts as a primary phosphate donor when mixed with disodium phosphate for fine-tuning pH
2. Pharmaceutical Applications
● Used as a laxative or osmotic agent in some oral preparations
● Serves as a buffer or excipient in:
o Intravenous solutions
o Eye drops
o Injectable medications
● Maintains acid-base balance in formulations
● Generally recognized as safe (GRAS) in regulated uses
3. Food Industry (Additive and pH Regulator)
● Sodium dihydrogen phosphate dihydrate丨CAS 13472-35-0 functions as a food additive (E339):
o Acts as a leavening agent, emulsifier, and acidity regulator
o Common in baked goods, dairy products, processed cheese, and beverages
● Helps retain moisture and texture in meats and seafood
4. Water Treatment
● Used to prevent scale and corrosion in water systems by:
o Controlling pH
o Sequestering calcium and magnesium ions
● Can be part of formulations for boiler water conditioning
5. Agriculture and Fertilizers
● Occasionally used in foliar sprays or fertilizer blends to supply phosphorus, a vital macronutrient for plant growth
● Aids in soil pH stabilization and nutrient uptake
6. Analytical and Diagnostic Applications
● Used in analytical chemistry as a reagent and standard buffer
● Maintains stable pH in biological assays, titrations, and colorimetric tests
Benefits
1. Excellent Buffering Capacity
● Provides stable and predictable pH control, especially in the acidic to neutral range
● Compatible with a variety of biological systems
2. High Solubility in Water
● Dissolves readily, allowing for easy preparation of aqueous buffer systems
● Ensures uniform distribution in food, pharmaceuticals, and lab solutions
3. Safe and Non-toxic
● Low toxicity and GRAS status for food and pharmaceutical use
● Non-hazardous under normal handling conditions
4. Hydrated Form Enhances Stability
● The dihydrate form offers:
o Improved crystallization
o Longer shelf life
o Reduced hygroscopic behavior compared to anhydrous form
5. Multifunctional
● Useful in cross-disciplinary applications: from life sciences to materials processing
● Combines buffering, hydration, ion balance, and stabilization functions
Conclusion
Sodium dihydrogen phosphate dihydrate丨CAS 13472-35-0 is a highly versatile, water-soluble, and biocompatible phosphate salt. Its wide-ranging applications in buffer preparation, pharmaceutical formulations, food processing, and water treatment highlight its value in both industrial and laboratory settings. With a proven safety profile and excellent functional characteristics, it is an essential component in many biological, chemical, and manufacturing processes.
