Trisodium Phosphate TSP 98% Anhydrous Industrial Grade

Trisodium Phosphate (TSP) 98% Anhydrous Industrial Grade, also known as Trisodium Orthophosphate or Sodium Phosphate Tribasic, is a highly alkaline, water-soluble inorganic phosphate widely used in industrial water treatment, boiler-water conditioning, detergent manufacturing, industrial cleaning, metal degreasing, electroplating, textile processing, and general chemical-processing applications.

The product is supplied as a white crystalline powder or granular solid containing a minimum of 98.0% Trisodium Phosphate. It dissolves readily in water and produces a strongly alkaline solution, making it suitable for applications that require pH adjustment, water conditioning, detergent building, degreasing, and phosphate-based treatment.

Trisodium Phosphate is valued for its ability to interact with calcium and magnesium ions, support water-softening processes, improve cleaning efficiency, and provide alkalinity in industrial formulations. It can be used as a functional component in boiler-water programs, heavy-duty cleaning formulations, metal-cleaning systems, detergent blends, and selected textile and process-water applications.

Because application requirements vary according to water chemistry, process conditions, substrate type, equipment metallurgy, and treatment objectives, the correct dosage should be determined through technical evaluation and application testing.

Product Information

Product Name: Trisodium Phosphate Anhydrous
Abbreviation: TSP
Chemical Name: Trisodium Phosphate
Alternative Name: Trisodium Orthophosphate
Alternative Name: Sodium Phosphate Tribasic
CAS No.: 7601-54-9
EC No.: 231-509-8
Chemical Formula: Na₃PO₄
Molecular Weight: 163.94 g/mol
Grade: Industrial Grade
Hydration State: Anhydrous
Physical Form: Crystalline Powder or Granules
Appearance: White Crystalline Powder or Granules
Trisodium Phosphate Content: ≥98.0%
P₂O₅: ≥39.5%
pH, 1% Solution: 11.5–12.5
Water Solubility: Soluble
Standard Packaging: 25 kg PP Woven Bag with PE Inner Liner
Bulk Packaging: 1000 kg FIBC Jumbo Bag, where available

Key Features

• Trisodium Phosphate content ≥98.0%
• CAS 7601-54-9
• Industrial Grade
• Anhydrous TSP
• White crystalline powder or granules
• Strong alkaline properties
• Good water solubility
• Suitable for industrial water conditioning
• Suitable for boiler-water treatment programs
• Water-softening functionality
• Effective detergent-builder component
• Supports industrial degreasing
• Helps improve removal of oils and grease
• Suitable for metal cleaning and surface preparation
• Suitable for electroplating pretreatment
• Suitable for textile and dyeing processes
• Suitable for industrial chemical formulations
• Available in moisture-resistant export packaging

Technical Specification

Industrial Water Treatment

Trisodium Phosphate can be used in industrial water-treatment applications where alkalinity control, phosphate conditioning, and hardness management are required.

Its phosphate chemistry can interact with calcium and magnesium species present in water, supporting water-conditioning processes and helping reduce the negative effects of hardness in selected systems.

Typical water-treatment functions include:

• Water conditioning
• Hardness management
• pH adjustment
• Alkalinity control
• Phosphate treatment
• Process-water conditioning
• Scale-control support

The correct treatment level should be selected according to actual water analysis and operating conditions.

Boiler Water Conditioning

TSP is commonly used as part of selected phosphate-based boiler-water treatment programs.

Potential functions include:

• Phosphate conditioning
• Boiler-water alkalinity adjustment
• Hardness control
• Scale-control support
• pH management
• Internal boiler-water treatment

When added to a properly designed boiler-water program, phosphate chemistry can help manage residual hardness and maintain suitable water conditions.

The required concentration depends on factors such as:

• Boiler operating pressure
• Feed-water quality
• Calcium and magnesium hardness
• Alkalinity
• Condensate return
• Blowdown rate
• Temperature
• Existing treatment chemicals

A qualified water-treatment program should determine the correct concentration for each system.

Industrial Water Softening

Trisodium Phosphate may be used as a water-conditioning or softening component in selected industrial processes.

Hardness ions such as calcium and magnesium can interfere with industrial cleaning, detergency, surface treatment, and process-water quality.

TSP can support systems where hardness management is important for:

• Industrial washing
• Equipment cleaning
• Process-water conditioning
• Metal-treatment systems
• Detergent formulations
• Boiler-water treatment
• General industrial water applications

Industrial Degreasing

TSP is widely used in alkaline industrial-cleaning and degreasing formulations.

Its strong alkalinity helps loosen oils, grease, dirt, and other soils from suitable industrial surfaces.

Potential benefits include:

• Improved grease removal
• Oil emulsification support
• Soil loosening
• Increased cleaning-solution alkalinity
• Hard-water conditioning
• Improved detergent performance

TSP can be incorporated into heavy-duty cleaning formulations for equipment, floors, machinery, metal parts, and other compatible industrial surfaces.

Compatibility should be checked before use on sensitive materials.

Detergent Manufacturing

Trisodium Phosphate can function as a detergent builder in selected industrial and institutional cleaning formulations.

Its functions may include:

• Water softening
• Alkalinity building
• pH adjustment
• Soil suspension
• Oil and grease removal support
• Cleaning-performance enhancement

Potential formulation applications include:

• Heavy-duty industrial detergents
• Equipment cleaners
• Degreasing products
• Hard-surface cleaners
• Metal-cleaning formulations
• Institutional cleaning products

The final formulation should be tested for compatibility and performance.

Metal Cleaning

TSP may be used in metal-cleaning systems where alkaline degreasing and surface preparation are required.

Applications may include:

• Removal of oil and grease from metal surfaces
• Cleaning before coating
• Cleaning before painting
• Surface preparation
• Industrial component washing
• Electroplating pretreatment

The concentration and temperature should be adjusted according to the metal type and cleaning requirement.

Special care should be taken with surfaces that may be sensitive to strongly alkaline solutions.

Electroplating

Trisodium Phosphate may be used in selected electroplating operations as part of alkaline cleaning and pretreatment systems.

Potential functions include:

• Surface degreasing
• Cleaning before plating
• Water conditioning
• Alkalinity adjustment
• Soil and oil removal

Proper rinsing and process compatibility should be confirmed before the treated component enters the plating bath.

Textile Processing

TSP may be used in selected textile-processing applications requiring alkalinity, water conditioning, or cleaning support.

Potential applications include:

• Textile washing
• Process-water conditioning
• Dyeing-process support
• Cleaning formulations
• Alkalinity adjustment
• Selected finishing operations

The required concentration depends on fiber type, dyes, auxiliaries, temperature, and the overall process formulation.

Pulp & Paper Industry

Trisodium Phosphate may be used in selected pulp and paper operations for:

• Process-water conditioning
• Equipment cleaning
• Alkaline washing
• pH adjustment
• Maintenance-cleaning formulations

Its suitability should be evaluated according to the specific paper-making process and chemical program.

Industrial Cleaning Formulations

TSP can be incorporated into industrial-cleaning formulations requiring strong alkalinity and water-conditioning properties.

Possible applications include:

• Machinery cleaners
• Equipment degreasers
• Floor-cleaning compounds
• Workshop cleaners
• Metal-cleaning products
• Process-equipment cleaners
• Hard-surface cleaning formulations

It may be combined with surfactants, builders, sequestrants, and other compatible cleaning ingredients.

Ceramic & Enamel Processing

Trisodium Phosphate may be used as an auxiliary chemical in selected ceramic and enamel processes.

Potential functions include:

• Surface cleaning
• Process-water conditioning
• Alkalinity adjustment
• Preparation of materials or equipment

Application suitability should be verified according to the production process.

General Chemical Processing

TSP can be used in industrial chemical processes requiring:

• Alkaline conditions
• Phosphate chemistry
• pH adjustment
• Buffering support
• Water conditioning
• Cleaning support
• Metal-ion interaction

It can also be used as a raw material or functional additive in suitable industrial formulations.

Water-Softening Function

Calcium and magnesium ions are major contributors to water hardness.

In appropriate treatment systems, phosphate chemistry can interact with these ions and support water-conditioning processes.

This may help improve:

• Cleaning efficiency
• Detergent performance
• Process-water consistency
• Equipment cleanliness
• Treatment-system performance

TSP should not be considered a universal replacement for all water-softening technologies. Its suitability depends on the specific process and water chemistry.

Alkalinity & pH Adjustment

Trisodium Phosphate produces a strongly alkaline aqueous solution.

This makes it useful for applications where increased alkalinity or elevated pH is required.

Potential uses include:

• Industrial cleaning
• Boiler-water conditioning
• Chemical processing
• Detergent formulations
• Textile operations
• Metal-cleaning systems

The required addition level should be carefully controlled to avoid excessive alkalinity.

Recommended Application & Dosage

There is no universal dosage that is suitable for every TSP application.

The correct concentration depends on:

• Water hardness
• Alkalinity
• pH
• Temperature
• Boiler operating pressure
• Cleaning requirements
• Soil and grease loading
• Process-water chemistry
• Surface material
• Equipment metallurgy
• Other chemicals in the formulation
• Desired treatment result

For industrial water treatment and boiler applications, dosage should be based on water analysis and treatment calculations.

For cleaning and degreasing, laboratory or small-scale compatibility testing is recommended before full-scale application.

Important Product Grade Distinction

This product is specifically:

Anhydrous Trisodium Phosphate Industrial Grade

CAS No.: 7601-54-9

It should not be confused with:

Trisodium Phosphate Dodecahydrate

CAS No.: 10101-89-0

The two products have different hydration states, molecular weights, moisture levels, and phosphate contents.

Anhydrous TSP: Na₃PO₄

TSP Dodecahydrate: Na₃PO₄·12H₂O

This listing applies only to the anhydrous industrial grade.

Packaging

Standard Packaging

25 kg PP Woven Bag with PE Inner Liner

The internal polyethylene liner helps protect the product against moisture and contamination during storage and transportation.

Bulk Packaging

Where available:

1000 kg FIBC Jumbo Bag

Alternative packaging may be supplied according to customer requirements and order quantity, subject to confirmation.

Storage

Trisodium Phosphate should be stored in a cool, dry, and well-ventilated warehouse.

Recommended storage conditions include:

• Keep packaging tightly sealed
• Protect from rain
• Protect from excessive humidity
• Store on dry pallets
• Keep away from wet floors
• Protect from direct contamination
• Avoid unnecessary exposure to atmospheric moisture
• Keep away from incompatible acids
• Protect bags from puncture or tearing

TSP can absorb moisture from the atmosphere.

Excessive moisture exposure may cause:

• Caking
• Reduced flowability
• Partial hydration
• Handling difficulties
• Changes in physical appearance

Opened packaging should be resealed promptly.

Handling

Avoid generating excessive dust during handling, bag opening, transfer, and mixing.

Suitable workplace controls may include:

• Protective gloves
• Safety goggles
• Protective clothing
• Local ventilation
• Dust-control measures
• Appropriate respiratory protection where required by workplace assessment

Avoid:

• Eye contact
• Prolonged skin contact
• Dust inhalation
• Ingestion

Because TSP forms a strongly alkaline solution, concentrated solutions should be handled carefully.

Always follow the current product-specific Safety Data Sheet.

Quality Control

Commercial Trisodium Phosphate should be tested against the approved specification before shipment.

Typical quality-control parameters include:

• Appearance
• Trisodium Phosphate assay
• P₂O₅
• Sulfate
• Chloride
• Iron
• Arsenic
• Water-insoluble matter
• Moisture
• pH

Each batch should be supported by a Certificate of Analysis where required.

Technical Data Summary

Product: Trisodium Phosphate Anhydrous
Abbreviation: TSP
CAS No.: 7601-54-9
EC No.: 231-509-8
Formula: Na₃PO₄
Molecular Weight: 163.94 g/mol
Grade: Industrial Grade
Appearance: White Crystalline Powder or Granules
TSP Content: ≥98.0%
P₂O₅: ≥39.5%
Sulfate: ≤0.50%
Chloride: ≤0.40%
Iron: ≤0.01%
Arsenic: ≤0.005%
Water Insolubles: ≤0.10%
Moisture: ≤1.0%
pH, 1% Solution: 11.5–12.5
Water Solubility: Soluble
Packaging: 25 kg PP Woven Bag with PE Inner Liner
Bulk Packaging: 1000 kg FIBC, where available
Primary Application: Industrial Water Softening / Boiler Water Conditioning
Additional Applications: Industrial Degreasing / Detergent Manufacturing / Metal Cleaning / Electroplating / Textile Processing

Documentation

Available documentation may include:

• Technical Data Sheet - TDS
• Safety Data Sheet - SDS
• Batch-Specific Certificate of Analysis - COA
• Commercial Invoice
• Packing List
• Certificate of Origin

Additional certificates should only be offered when valid documentation applies to the actual supplied grade.

Grade Limitation

This product is offered as:

Trisodium Phosphate Anhydrous Industrial Grade

It should not automatically be represented as:

• Food Grade
• FCC Grade
• Pharmaceutical Grade
• Drinking Water Grade
• Medical Grade
• Certified Potable-Water Treatment Grade

unless the supplied product has the appropriate specification, testing, and supporting certification.

Product Summary

Trisodium Phosphate TSP 98% Anhydrous Industrial Grade, CAS 7601-54-9, is a high-alkalinity, water-soluble inorganic phosphate supplied as a white crystalline powder or granules.

The product contains ≥98.0% Trisodium Phosphate and is suitable for a broad range of industrial applications including water softening, boiler-water conditioning, industrial cleaning, degreasing, detergent manufacturing, metal cleaning, electroplating, textile processing, and chemical formulation.

Its strong alkalinity, phosphate chemistry, water-conditioning properties, and cleaning functionality make it a versatile industrial raw material for customers requiring reliable phosphate-based performance.

Standard export packaging is 25 kg PP woven bags with PE inner liners, with 1000 kg FIBC bulk packaging available where applicable.

For best performance, dosage and application conditions should be selected according to actual water chemistry, process conditions, substrate compatibility, and technical requirements.