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Aluminium Ammonium Sulphate Dodecahydrate 99% feedback feedback feedback feedback feedback

Aluminium Ammonium Sulphate Dodecahydrate 99%

Price: £5.95

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Stock Availability
On Shelf - Approx. UK delivery date: Tuesday the 27th May 2025*
In bulk stock - ships within 4 - 8 Days (Excluding weekends and public holidays)
4 - 6 Weeks Approx.
* We will always try to ship as early as possible
  • As a mordant in hand dyeing
  • Making crystals
  • Is an astringent/styptic and antiseptic
  • A natural deodorant by inhibiting the growth of the bacteria responsible for body odor
  • General Laboratory Reagent

Ammonium aluminium sulfate, also known as ammonium alum or just alum, is a white crystalline double sulfate usually encountered as the dodecahydrate, formula (NH4)Al(SO4)2-12H2O.

It is used in small amounts in a variety of niche applications.

The dodecahydrate occurs naturally as the rare mineral tschermigite.

  • Minimum Assay: >99%
  • Molecular Formula: AlH4(SO4)2-12H2O
  • Molecular Weight: 453.32 g/mol
  • Melting Point: 93.5 C
  • Solubility in water (% weight): 14% in water
  • Insoluble matter: <0.001%
  • Reaction: 3.22
  • Chloride (Cl): <0.001%
  • Nitrate (NO3): <0.001%
  • Phosphate (PO4): 0.002%
  • Silicate (SiO3): <0.002%
  • Arsenic (As): <0.00005%
  • Copper (Cu): 0.00009%
  • Iron (Fe): 0.00034%
  • Lead (as Pb): 0.001%
  • Potassium (K): <0.0004%
  • Sodium (Na): <0.001%
  • Calcium (Ca): <0.0001%

Hazard Phrases: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wash hands thoroughly after handling. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Get medical advice/attention.

Harmful CLP Image

Cas No: 7784-26-1
Einecs No: 232-055-3
Rating:
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Date:
30th April 2020
Review:
“I'm sorry but I don't seem to be able to access the link you sent. However, I will go with the dilution you recommend and see of it deters the crows !!!!”
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Date:
14th April 2019
Review:
“third time used first class service”
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Date:
27th March 2019
Review:
“Prompt delivery. Fine and uniform powder. Excellent solubility.”
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Date:
18th March 2019
Review:
“very good service”

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