Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Product Profile
- Full IUPAC Name: Trisodium phosphate
- Aliases: TSP, Sodium orthophosphate
- CAS Number: 7601-54-9
- EINECS: 231-509-8
- Molecular Formula: Na3PO4
- Molecular Weight: 163.94
- Chemical Classification: Inorganic phosphate salt, industrial cleaning agent, water softener, food additive
- Core Advantages
Strong alkaline inorganic phosphate with excellent emulsification, dispersing, degreasing and water softening capacity. Chelates calcium/magnesium ions in hard water, removes oil stains rapidly. Multi-grade available: Industrial Grade, Food Grade, Detergent Grade, widely used in metal cleaning, laundry detergent, food processing, boiler water treatment and ceramic glaze industry.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: White crystalline powder
- Odor: Odorless
- Solubility: Soluble in water to form strongly alkaline solution; insoluble in ethanol and organic solvents
- Melting Point: 1583 °C
- Aqueous solution pH (1%): 11.5–12.5
- Hygroscopy: Hygroscopic, easy to absorb moisture and agglomerate in humid air
- Crystal characteristic: Anhydrous powder, easy to form hydrate when contacting water vapor
2.2 Chemical Properties
- Phosphate anion characteristic: Reacts with calcium, magnesium, iron ions to form insoluble phosphate precipitates, realizing water softening
- Strong alkalinity: Hydrolysis in water generates OH-, powerful saponification to decompose animal/plant grease
- Acid-base reaction: Neutralizes with all inorganic acids to produce sodium dihydrogen phosphate / disodium hydrogen phosphate
- Thermal stability: Stable at normal temperature, only melts at ultra-high temperature without decomposition
- Photostability: No discoloration under light irradiation
- Compatibility: Compatible with anionic surfactants; incompatible with acid substances, hard water metal ions
3. Main Application Fields
3.1 Industrial & Daily Cleaning Agent (Core Usage)
Main raw material for heavy-duty metal degreaser, laundry detergent, dishwashing powder; removes oil, rust and scale on steel, aluminum workpiece surface.
3.2 Food Industry Additive (Food Grade)
Food pH regulator, water retention agent, emulsifier for meat products, pasta, dairy and beverage processing.
3.3 Water Treatment Chemical
Hard water softener for circulating water, boiler water, prevents calcium magnesium scale deposition on pipeline inner wall.
3.4 Ceramic & Printing Auxiliary
Dispersant for ceramic glaze slurry; printing and dyeing water softener to improve fabric coloring uniformity.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 7601-54-9 |
| Molecular Formula | Na3PO4 |
| Molecular Weight | 163.94 |
| Appearance | White crystalline powder |
| Na3PO4 Assay | Industrial ≥98.0%; Food ≥99.0% |
| Water Insoluble Matter | ≤0.10% |
| pH (1% aqueous solution) | 11.5–12.5 |
| Heavy Metals (Pb) | ≤10 ppm (Food Grade) |
| Arsenic (As) | ≤3 ppm (Food Grade) |
| Bulk Package | 25kg woven bag with PE inner liner |
| Sample Package | 1kg / 5kg sealed plastic bag |
| Storage Requirements | Hermetic moisture-proof dry warehouse ≤25℃; isolate humid air and acidic raw materials |
| Transportation Rule | General inorganic alkaline phosphate; waterproof packaging required during transit |
| Shelf Life | 24 months under intact sealed packaging |
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