Sodium Tripolyphosphate

Na₅P₃O₁₀

IUPAC: Sodium triphosphate

CAS: 7758-29-4

概述

STPP is the most commonly used detergent builder, softening water by sequestering calcium and magnesium ions. It is restricted in some regions due to eutrophication.

组成

元素 符号 原子 原子质量
Oxygen O 10 15.9990
Sodium Na 5 22.9900
Phosphorus P 3 30.9740

元素组成

O
Oxygen ×10
43.5%
Na
Sodium ×5
31.2%
P
Phosphorus ×3
25.3%

用途

  • • Detergent builder
  • • Water softener
  • • Food additive (E451)
  • • Ceramic dispersant

趣味知识

  • ✦ Phosphate detergent bans in the 1970s-80s significantly reduced algal blooms in lakes

安全性

  • ⚠ Environmental concern (eutrophication)

Structure

SMILES

[O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+]

属性

类型
salt
状态
solid
摩尔质量
367.86 g/mol
密度
2.5200 g/cm³
熔点
622.0 °C
溶解度
145 g/L at 25°C

Molecular Descriptors

Exact Mass
367.8193
TPSA
185.0 Ų
H-Bond Donors
0
H-Bond Acceptors
10
Rotatable Bonds
2
Heavy Atoms
18
Complexity
241.0

相关化合物

Diammonium Phosphate

(NH₄)₂HPO₄

Ammonium Chloride

NH₄Cl

Barium Chloride

BaCl₂

Cadmium Sulfide

CdS

Calcium Sulfate

CaSO₄

Cerium(III) Chloride

CeCl₃

Copper(II) Sulfide

CuS

Ammonium Sulfate

(NH₄)₂SO₄

Ammonium Bicarbonate

NH₄HCO₃

Calcium Propionate

Ca(C₂H₅COO)₂

Frequently Asked Questions

What is Sodium Tripolyphosphate?
Sodium Tripolyphosphate (Na₅P₃O₁₀) is a salt compound with the IUPAC name Sodium triphosphate.
What is the molecular weight of Sodium Tripolyphosphate?
Sodium Tripolyphosphate has a molar mass of 367.86 g/mol.
What state is Sodium Tripolyphosphate at room temperature?
Sodium Tripolyphosphate is a solid at room temperature.
Is Sodium Tripolyphosphate organic or inorganic?
Sodium Tripolyphosphate is classified as an inorganic compound.
What elements make up Sodium Tripolyphosphate?
Sodium Tripolyphosphate (Na₅P₃O₁₀) is composed of Oxygen (O), Sodium (Na), Phosphorus (P).