ALUM

Description:

• Aluminum sulfate is a white, crystalline solid with astringent properties.
• It is soluble in water and has a wide range of applications.

Common Uses:

1. Water Treatment:
   • Clarification of Water: Aluminum sulfate is used in water treatment plants as a coagulant for the clarification of drinking water and wastewater.
   • pH Adjustment: It can help in adjusting the pH of water.
2. Paper Industry:
   • Sizing Agent: Aluminum sulfate is used in the paper industry as a sizing agent to improve the paper’s resistance to ink penetration.
3. Textile Industry:
   • Mordant: It is used as a mordant in the textile industry to help dyes adhere to fabrics.
4. Tanning Industry:
   • Leather Tanning: In the tanning of leather, aluminum sulfate is used as a tanning agent.
5. Deodorant and Antiperspirant:
   • Antiperspirant: Some forms of alum are used in the production of deodorants and antiperspirants.
6. Food Industry:
   • Food Additive: Aluminum sulfate is used in certain food products as a firming agent for fruits and vegetables.
7. Soil Amendment:
   • Soil pH Adjustment: In gardening, alum can be used to lower soil pH.

Health Considerations:

• Aluminum sulfate is generally considered safe for its intended uses when used in accordance with recommended guidelines.
• However, excessive exposure to aluminum compounds has been associated with certain health concerns, so its use should be controlled and within established limits.