Is this allum potassium alum? it doesn't say what kind of alum it is and there are many kinds chemically speaking.

The kinds of alum used for food is typically potassium alum. This is the case in McCormick's Alum, as well.

what are the benefits ??

Alum (potassium aluminum sulfate) is a food additive that is ideal for pickling and canning. It helps create crisp pickled fruits or vegetables. ~ Erica

Can I use this powder to purify drinking water in a vessel

No, it is used to clarify water not purify.

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Description

🧊 Elevate your crunch game with alum’s crisp magic!

COMPACT CONVENIENT - 1.9 oz flip-top bottle fits perfectly in your pantry or DIY kit.
CLEAN CONSCIOUS CHOICE - Kosher, vegan, and free from high-fructose corn syrup—because you deserve purity.
PURE POWER IN EVERY GRAIN - Finely ground alum dissolves effortlessly for seamless use.
VERSATILE KITCHEN ESSENTIAL - Ideal for pickling, canning, and even DIY natural deodorants.
CRUNCH THAT COMMANDS ATTENTION - Locks in that perfect pickle crunch every time.

McCormick’s 1.9 oz alum is a premium, finely ground potassium aluminum sulfate powder designed to keep fruits and vegetables firm and crispy during pickling and canning. Kosher and vegan certified, this pure, unflavored additive also shines in DIY natural deodorant recipes, making it a versatile must-have for health-conscious, trend-savvy home chefs and makers.

Specifications

ASIN	B008KQAS3U
Age Range Description	Adults
Best Sellers Rank	#5,769 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #1 in Alum Thickeners
Brand	McCormick
Brand Name	McCormick
Coin Variety 1	Watermelon
Color	Multicolor
Container Type	Flip-Top Bottle
Cuisine	Universal
Customer Reviews	4.6 out of 5 stars 1,614 Reviews
Diet Type	Vegetarian
Flavor	Unflavored
Global Trade Identification Number	00052100002149
Item Form	Solid
Item Package Quantity	1
Item Package Weight	0.01 Kilograms
Item Weight	2.45 ounces
Manufacturer	McCormick & Company, Inc.
Model Number	052100002149
Number of Items	1
Number of Pieces	1
Part Number	052100002149
Size	1.9 Ounce (Pack of 1)
Specialty	Kosher Certified, Vegan, Vegetarian, high-fructose-corn-syrup-free, low-carb
Unit Count	1.9 Ounce

Reviews

L**K

20.01.2026

K**H

28.04.2026

B**Z

29.07.2025

M**S

25.04.2026

L**L

13.07.2024

P**R

26.02.2026

D**O

4.12.2025

L**R

1.12.2025

K**S

28.11.2025

D**A

3.06.2025

S**N

9.11.2024

I**E

18.06.2025

B**C

28.02.2024

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Alum, 1.9 oz

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