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Aluminum Sulfate, Food Grade, Pure Dry Alum, Hide Tanner, Water treatment, thickener, Soil acidifier

Aluminum Sulfate, Food Grade, Pure Dry Alum, Hide Tanner, Water treatment, thickener, Soil acidifier

Regular price $6.95 $6.15 Sale

Pure Organic Ingredients Aluminum Sulfate is 100% Pure Food Grade Alum for Pickling, Gardening, Firming Agent, Water Treatment, & More!


Many Uses:

Helps to lower soil pH for acid loving plants. Designed for plants like azaleas, camellias, gardenias, hemlock holly, cedar, blueberry, etc. Formula turns hydrangeas blue. Works well in all soil types.

Use as a firming agent or anti-caking and thickening agent.

Water Soluble for the purification of drinking water and waste water treatment plants, and paper manufacturing.

Used to dye and print cloth (the gelatinous precipitate helps the dye adhere to the clothing fibers by rendering the pigment insoluble.)

Reduce the pH of garden soil.

Use in styptic pencils and powders, and pain relief from stings and bites.

Waterproofing agent and accelerator in concrete.

Foaming agent in firefighting foam.


Recommended Use:

For Hydrangeas: Ideally you want a pH of 4.5 to 5.5; check the pH and then add small amounts until you are in the right range.

For Water Purification: Use according to directs for your filter type.

For Styptic Pencil or Powder: Apply small amount of powder directly cut or use according the directions of desired recipe.



100% Pure Alum


Warning: Keep out of reach of children. Harmful if swallowed. May cause skin irritation. Causes serious eye irritation. Use caution when handling.


At Pure Organic Ingredients we strive to be a proactive, integral, and responsible member of our environment and community. We try to make all our packaging from natural materials like recycled, virgin or dye-free paper. Our Natural Kraft Paper Bags are an Earth-Conscious alternative that present a lesser burden on the environment than our competitor’s plastic bags.


100% MONEY BACK GUARANTEE: We are confident that you'll love our products and stand behind every item with a 100% satisfaction guarantee. If you are not satisfied with your purchase, return the product for a full refund.