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7784-31-8

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7784-31-8 Usage

Uses

Different sources of media describe the Uses of 7784-31-8 differently. You can refer to the following data:
1. The compound is used heavily in the paper industry. In its acidic solution form, which contains a slight excess of H2SO4, it is used for pH control of pulp slurries, treatment of process waters, setting of dyes and also for precipitating dissolved resin for setting the size on the fibers. In slight basic form (containing a slight excess of Al2O3), it is used for treatment of drinking and waste waters (e.g., for reducing phosphorus content). Other major applications include dyeing, tanning, catalysts, modification of concrete, and in the manufacture of various chemicals and pharmaceutical products.
2. Aluminium sulfate octadecahydrate is a preservative, the inclusive term for several inum-type compounds such as inum sulfate and inum potassium sulfate. It is used with edta to prevent discoloration of potatoes and to maintain the firmness of shrimp packs. It is also used in pickles and pickle relish.

Preparation

Prepared from bauxite, kaolin or aluminum compounds on reaction with H2SO4. The insoluble silicic acid is filtered out; the hydrate salt forms on crystallization.

Chemical Properties

white crystalline powder and chunks

Physical properties

White crystal; sweet taste; density 1.62 g/cm3: decomposes at 86.5°C; soluble in water.

Definition

ChEBI: A hydrate resulting from the the formal combination of anhydrous aluminium sulfate with approximately 18 mol eq. of water. The commercial product usually contains 5-10% less water than theory. It is one of the commonest hydrates of aluminium sulfate.

Check Digit Verification of cas no

The CAS Registry Mumber 7784-31-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7784-31:
(6*7)+(5*7)+(4*8)+(3*4)+(2*3)+(1*1)=128
128 % 10 = 8
So 7784-31-8 is a valid CAS Registry Number.
InChI:InChI=1/2Al.3H2O4S.9H2O/c;;3*1-5(2,3)4;;;;;;;;;/h;;3*(H2,1,2,3,4);9*1H2/q2*+3;;;;;;;;;;;;/p-6

7784-31-8 Well-known Company Product Price

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  • (Code)Product description
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  • Sigma-Aldrich

  • (227617)  Aluminum sulfate hydrate  ≥97%

  • 7784-31-8

  • 227617-100G

  • 497.25CNY

  • Detail
  • Sigma-Aldrich

  • (227617)  Aluminum sulfate hydrate  ≥97%

  • 7784-31-8

  • 227617-500G

  • 1,903.59CNY

  • Detail
  • Sigma-Aldrich

  • (227617)  Aluminum sulfate hydrate  ≥97%

  • 7784-31-8

  • 227617-2.5KG

  • 6,943.95CNY

  • Detail
  • Sigma-Aldrich

  • (11044)  Aluminum sulfate hydrate  puriss., meets analytical specification of Ph.?Eur., BP, 100-110%, 51.0-59.0% Al2(SO4)3 basis

  • 7784-31-8

  • 11044-1KG

  • 986.31CNY

  • Detail
  • Sigma-Aldrich

  • (11044)  Aluminum sulfate hydrate  puriss., meets analytical specification of Ph.?Eur., BP, 100-110%, 51.0-59.0% Al2(SO4)3 basis

  • 7784-31-8

  • 11044-2.5KG

  • 2,108.34CNY

  • Detail
  • Sigma-Aldrich

  • (11044)  Aluminum sulfate hydrate  puriss., meets analytical specification of Ph.?Eur., BP, 100-110%, 51.0-59.0% Al2(SO4)3 basis

  • 7784-31-8

  • 11044-6X1KG

  • 4,235.40CNY

  • Detail
  • Sigma-Aldrich

  • (11044)  Aluminum sulfate hydrate  puriss., meets analytical specification of Ph.?Eur., BP, 100-110%, 51.0-59.0% Al2(SO4)3 basis

  • 7784-31-8

  • 11044-25KG-H

  • 10,547.55CNY

  • Detail

7784-31-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name aluminium sulfate octadecahydrate

1.2 Other means of identification

Product number -
Other names Aluminum sulfate octadecahydrate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7784-31-8 SDS

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