Potassium Aluminum Sulfate

KAl(SO₄)₂

IUPAC: Potassium aluminium sulfate

CAS: 7784-24-9

Tổng quan

Potash alum is a double salt used in water purification, pickling, and as an astringent. It has been used since antiquity.

Thành phần

Nguyên tố Ký hiệu Nguyên tử Khối lượng nguyên tử
Oxygen O 8 15,9990
Aluminum Al 1 26,9820
Sulfur S 2 32,0600
Potassium K 1 39,0980

Thành phần nguyên tố

O
Oxygen ×8
49,6%
Al
Aluminum ×1
10,4%
S
Sulfur ×2
24,8%
K
Potassium ×1
15,1%

Công dụng

  • • Water purification
  • • Pickling agent
  • • Aftershave astringent
  • • Baking powder

Sự thật thú vị

  • ✦ Ancient Romans used alum to purify drinking water over 2,000 years ago

Structure

SMILES

O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Al+3].[K+]

Tính chất

Loại
salt
Trạng thái
solid
Khối lượng mol
258,21 g/mol
Mật độ
1,7250 g/cm³
Điểm nóng chảy
92,0 °C
Độ hòa tan
140 g/L at 20°C

Molecular Descriptors

Exact Mass
473,9755
TPSA
189,0 Ų
H-Bond Donors
12
H-Bond Acceptors
20
Rotatable Bonds
0
Heavy Atoms
24
Complexity
62,0

Hợp chất liên quan

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 Potassium Aluminum Sulfate?
Potassium Aluminum Sulfate (KAl(SO₄)₂) is a salt compound with the IUPAC name Potassium aluminium sulfate.
What is the molecular weight of Potassium Aluminum Sulfate?
Potassium Aluminum Sulfate has a molar mass of 258.21 g/mol.
What state is Potassium Aluminum Sulfate at room temperature?
Potassium Aluminum Sulfate is a solid at room temperature.
Is Potassium Aluminum Sulfate organic or inorganic?
Potassium Aluminum Sulfate is classified as an inorganic compound.
What elements make up Potassium Aluminum Sulfate?
Potassium Aluminum Sulfate (KAl(SO₄)₂) is composed of Oxygen (O), Aluminum (Al), Sulfur (S), Potassium (K).