CAS 7758-29-4 Na5P3O10 Sodium Tripolyphosphate For Industry
Key attributes
Molecular formula: Na5P3O10
Molecular weight: 367.86
Industrial grade CAS 7758-29-4
Industrial grade products & COA meets GB/T 9983-2004 standard:
| Items for detecting and analyzing | Standard value |
| Main content: sodium tripolyphosphate ≥ | 96.0% |
| Phosphorus pentoxide P2O5≤ | 57.0% |
| Water insoluble≤ | 0.10% |
| Iron ≤ | 0.007% |
| Ph Value (1%) | 9.2-10.0 |
| Whiteness ≥ | 90 |
Physical and chemical properties of Sodium Tripolyphosphate
| Chemical Formula | Na₅P₃O₁₀ |
| Molecular Weight | 367.86 g/mol |
| Appearance | White crystalline or powdery solid. |
| Form | Typically exists as an anhydrous compound (Na₅P₃O₁₀) or a
hexahydrate (Na₅P₃O₁₀·6H₂O). |
| Water Solubility | Highly soluble in water, with solubility increasng with
temperature. At 20°C, solubility is approximately 14 g/100 mL. At 60°C, solubility is approximately 30 g/100 mL. |
| Other Solvent | Insoluble in organic solvents (e.g., ethanol). |
| Aqueous Solution pH | The pH of a 1% aqueous solution is approximately 9.5-10.5, making
it alkaline |
| Decomposition Temperature | Decomposes at high temperatures (around 622°C) into sodium
pyrophosphate (Na₄P₂O₇) and sodium metaphosphate (NaPO₃). |
| Hydrate Stability | The hexahydrate tends to effloresce in dry air, losing its water of
crystallization. |
| Property | Strong hygroscopicity; easily absorbs moisture from the air and may
form clumps. |
| Property | STPP has strong chelating ability, forming stable soluble complexes
with metal ions such as calcium, magnesium, and iron in water. |
| Application | This property makes it highly valuable in water treatment,
detergents, and food processing. |
History of sodium tripolyphosphate
Sodium Tripolyphosphate (STPP) is an important chemical product,
which is widely used in detergent,
food processing, water treatment and other fields. Here is an
overview of its historical development:
1. Early discovery and development
At the end of the 19th century, the chemical properties of
phosphate were gradually studied by scientists,
and the application of phosphate and its salts began to receive
attention.
Early 20th century: With the development of the chemical industry,
sodium tripolyphosphate was synthesized
as a highly effective chelating agent and water softener.
2. Industrial production
Mid-20th century: With the rise of the detergent industry,
sodium tripolyphosphate became a key ingredient in detergent
formulations due to its excellent decontamination
and water softening capabilities. During this period, the
industrial production of sodium tripolyphosphate expanded rapidly.
1950s-1970s: Sodium tripolyphosphate is mass-produced worldwide and
widely used in household and industrial detergents.
3. Environmental issues and substitution
1970s-1980s: Research found that sodium tripolyphosphate was not
easy to degrade in the environment,
which would lead to water eutrophication, cause algae blooms, and
destroy water ecosystems.
As a result, many countries began to restrict or ban the use of
sodium tripolyphosphate in detergents.
Development of alternatives: In response to environmental problems,
scientists
and chemical companies have developed a variety of alternatives,
such as zeolite, sodium citrate, etc.,
to reduce the dependence on sodium tripolyphosphate.
4. Modern applications
Food industry: Sodium tripolyphosphate is used as a water retaining
agent and quality improver in food processing,
and is widely used in the processing of meat, seafood and other
products.
Water treatment: Sodium tripolyphosphate is used as a corrosion
inhibitor
and scale inhibitor in water treatment to help prevent scale
buildup in pipes and equipment.
Other fields: Sodium tripolyphosphate is also used in ceramics,
textiles, paper and other industries.
5. Future trends
Environmentally friendly alternatives: With the increase of
environmental awareness,
the use of sodium tripolyphosphate may be further restricted in the
future,
and more environmentally friendly alternatives will be developed
and promoted.
Technological innovation: Through technological innovation,
the production process of sodium tripolyphosphate may be more
environmentally friendly and reduce the impact on the environment.
Use of sodium tripolyphosphate
Sodium Tripolyphosphate (STPP) is a multifunctional chemical
product, which is widely used in many fields.
The following are its main uses:
1. Detergent industry
Main ingredient: Sodium tripolyphosphate is the main ingredient in
many household
and industrial detergents due to its excellent decontamination and
water softening ability.
Function: It can effectively chelate calcium and magnesium ions in
water, prevent scale formation,
and enhance the cleaning effect of detergent.
2. Food industry
Water retaining agent: In meat and seafood processing,
sodium tripolyphosphate is used as a water retaining agent to help
retain the moisture of products and improve taste and texture.
Quality improver: It can also improve the water retention and
stability of food, extend the shelf life.
3. Water treatment
Corrosion inhibitor: Sodium tripolyphosphate is used in water
treatment systems as a corrosion inhibitor
to prevent corrosion of pipes and equipment.
Scale inhibitor: it can effectively prevent the formation of scale
and maintain the efficient operation of the equipment.
4. Ceramic industry
Grinding aid: In ceramic production, sodium tripolyphosphate is
used as a grinding aid
to help improve the grinding efficiency of raw materials.
Dispersant: It can also improve the fluidity of the slurry and
improve product quality.
5. Textile industry
Washing aid: In textile processing, sodium tripolyphosphate is used
as a washing aid
to help remove impurities from the fibers.
Bleaching stabilizer: It can also stabilize the bleaching process
and improve the bleaching effect.
6. Paper industry
Dispersant: In the papermaking process, sodium tripolyphosphate is
used as a dispersant
to help evenly disperse the fibers in the pulp.
Retention agent: It can also improve the retention rate of the
filler and improve the quality of the paper.
7. Other applications
Cleaning agent: Sodium tripolyphosphate is used in various cleaning
agents, such as dishwashing detergent,
hard surface cleaning agent and so on.
Industrial cleaning: In industrial cleaning, it is used to remove
grease and dirt from metal surfaces.
8. Environmental protection and substitution
Environmentally friendly alternatives: Due to environmental
problems,
the application of sodium tripolyphosphate in some fields is
gradually replaced by environmentally friendly alternatives,
such as zeolite, sodium citrate and so on.
FAQ
1.What is your payment term?
We can accept T/T and L/C at sight as payment term.
2.Are you able to deliver on time?
Of course! we specialised in this line for many years,
many customer make a deal with me because we can deliver the goods
on time and keep the goods top quality!
3.Do you provide free sample?
Yes, we can provide free sample . You only need to take the express
fee.
4.How about the price?Can you make it cheaper?
We always take the customer’s benefit as the top priority.
Price is negotiable under different conditions, we are assuring you
to get the most competitive price.
5.Can I visit your company and factory in China?
Sure. You are very welcomed to visit our company in Weifang, China.
(We will have someone responsible for picking up and dropping off
at Weifang Airport)
6.What if there is a quality problem?
We have a professional and perfect after-sales service team, timely
for you to deal with all problems.
