Technical Grade CAS 7758-29-4 Sodium Tripolyphosphate For Scale
Inhibitor
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. |
International development prospect of Sodium Tripolyphosphate
1. Market demand
Detergent Industry: In developing countries, the market demand for
sodium tripolyphosphate remains strong due
to its cost effectiveness and efficiency. Although its use is
restricted in developed countries due
to environmental regulations, it is still widely used in emerging
markets.
Food Industry: With the growth of the global food processing
industry,
the demand for sodium tripolyphosphate as a water retaining agent
and quality improver is expected to remain stable.
Water treatment: The global emphasis on water resource management
has driven the use of sodium tripolyphosphate in water treatment,
especially in the field of industrial water treatment.
2. Environmental regulations
Developed countries: Strict environmental regulations in Europe and
the United States
and other regions have limited the use of sodium tripolyphosphate
in detergents,
promoting the development of environmentally friendly alternatives
(such as zeolite, sodium citrate).
Developing countries: In regions with relatively loose
environmental regulations,
the use of sodium tripolyphosphate is still common,
but may gradually be restricted in the future as environmental
awareness increases.
Use of Sodium Tripolyphosphate
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.
