Trisodium phosphate CAS 7601-54-9

Synonyms:
Molecular Formula: Na3O4P
Molecular Weight: 164
Hazard Class:Class 8
HS Code: 2835291000
Grade:Food grade 97%, 98%
Industrial grade 98%

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Model:
7601-54-9
Brand:
bosschemical
Code:
7601-54-9

Product Description

what is of Trisodium phosphate CAS 7601-54-9?

Trisodium phosphate (TSP) is an inorganic chemical compound (Na₃PO₄) known for its strong alkalinity and water solubility. It is a highly versatile substance used primarily as a heavy-duty industrial cleaner, a food additive, and a water treatment agent.

Specification

Test Item	Food Grade Standard
Main Content, mass fraction /% ≥	98.0
Phosphorus Pentoxide (as P₂O₅), mass fraction /% ≥	39.5
Methyl Orange Alkalinity (as Na₂O)	36–40
Heavy Metals (as Lead), mass fraction /% ≤	0.001
Arsenic (as As), mass fraction /% ≤	0.0003
Fluoride (as F), mass fraction /% ≤	0.005
Water Insoluble Matter, mass fraction /% ≤	0.10

food-grade

Item	Requirement	Test Method
Color	White	Take an appropriate amount of sample into a 50 mL beaker, observe color and form under natural light
Form	Powder or crystal	Take an appropriate amount of sample into a 50 mL beaker, observe color and form under natural light
Test Item		Standard Limit
Anhydrous Trisodium Phosphate (Na₃PO₄, ignited dry basis), mass fraction /% ≥		97.0
Monohydrate Trisodium Phosphate (Na₃PO₄·H₂O, ignited dry basis), mass fraction /%		11.5–12.5
Dodecahydrate Trisodium Phosphate (Na₃PO₄·12H₂O), mass fraction /%		11.5–12.5
pH Value (10 g/L aqueous solution)		11.5–12.5
Arsenic (As), mg/kg ≤		3
Fluoride (as F), mg/kg ≤		50
Heavy Metals (as Lead), mg/kg ≤		10
Lead (Pb), mg/kg ≤		4
Water Insoluble Matter, mass fraction /% ≤		0.2
Loss on Ignition (Anhydrous Na₃PO₄), mass fraction /%		2
Loss on Ignition (Monohydrate Na₃PO₄·H₂O), mass fraction /%		8–11
Loss on Ignition (Dodecahydrate Na₃PO₄·12H₂O), mass fraction /%		45–57

industrial-grade

Test Item	Industrial Grade Standard
Main Content (as Na₃PO₄·12H₂O), mass fraction /% ≥	98.0
Sulphate (as SO₄²⁻), mass fraction /% ≤	0.5
Chloride (as Cl), mass fraction /% ≤	0.4
Arsenic (As), mass fraction /% ≤	0.005
Iron (Fe), mass fraction /% ≤	0.01
Water Insoluble Matter, mass fraction /% ≤	0.1
pH Value (10 g/L aqueous solution)	11.5–12.5

Application Scenarios:

Industrial Grade:

1. Industrial Cleaning and High-Concentration Detergents: Because anhydrous materials do not release water of crystallization, preventing surrounding powder from becoming damp and clumping, they are ideal raw materials for many powdered and block-shaped concentrated detergents.

2. High-Concentration Solid Detergent Formulations: Widely used in industrial dishwasher blocks (washing bricks), heavily soiled laundry detergents, and automatic washing machine tub cleaners. It strongly chelates with calcium and magnesium ions in water (softening hard water), significantly enhancing the detergency of surfactants.

3. Degreasing of Large Metal Surfaces (Pre-treatment before Electroplating/Painting): Before electroplating, anodizing, or painting hardware and automotive parts, it is necessary to thoroughly remove stubborn oil stains left from machining. Alkaline cleaning solutions prepared with anhydrous trisodium phosphate are very stable in high-temperature tub washing and can efficiently saponify and emulsify animal, vegetable, and mineral oils.

4. Chemical Cleaning of Boilers and Heat Exchangers: Industrial boilers or central air conditioning pipe networks develop stubborn scale after a period of operation. Adding anhydrous materials to the cleaning formula can chemically peel and disperse calcium and magnesium scale.

Food Grade:

1. Anti-caking and quality improvement of solid powder foods:

* Solid beverage and soup powders: such as instant coffee powder, milk tea powder, compound seasoning powder, premixed flour, etc. It acts as a moisture retainer and acidity regulator in these products. Anhydrous components have low water absorption, preventing the entire package of solid powder from absorbing moisture, collapsing, or clumping during its shelf life.

* Instant noodles and grain products: As a dough improver. It improves the water-holding capacity of the dough, making the noodles more elastic and resilient after cooking, and less likely to become mushy.