will this leave a zinc phosphate coating when cleaning rusty metal?

no it doesn't clean the rust it will turn the existing rust from Iron 2 oxide to the more stable iron 3 phosphate which converts the rust to ferric phosphate in other words the black stuff after applying it to the rust. it prevents the formation of new rust by acting as a barrier as long as you manage to to convert all the rust. any non rusted metal will not get this coating. the most common way to get a zinc phosphate coating is to use electroplating using electrolysis. this product is most effective if you remove some of the thicker rust mechanically by sanding or using a wire brush so the phosphoric acid pernitrates most of the rust to convert it all. after that use something like por15 and an epoxy primer to protect whatever metal you are trying to treat. have done this to a few of my cars and used the product on other rusty metal objects and it prevents new rust from forming as long as you do not damage the surface coating and expose bare metal and you manage to convert all the rust. that's why cleaning as much of the rust off as possible and thinning out the rust yields best results.

Can you paint over it?

Use Phosphoric Acid diluted to 20% (200ml/litre. Apply to surface for 5-30 minutes to remove light film. Soak very rusty items for days with periodic agitation. Rinse with cold water., let dry, wipe clean metal with solvent, acetone, let dry apply primer

Does this need to be diluted to use as a rust converter?

YES! About 3 parts water to 1 part Phosphoric acid. Watch whatever you are cleaning, Do not leave object in solution for long periode of time!

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Phosphoric Acid 85% - Technical Grade - 15 Gallon Carboy - 85% Phosphoric Acid for PH Control, Corrosion Inhibitor, Metal Cleaning - Made in America

Phosphoric Acid 85% - Technical Grade - 15 Gallon Carboy - 85% Phosphoric Acid for PH Control, Corrosion Inhibitor, Metal Cleaning - Made in America

Product ID: 177490206

Details

Brand
Alliance
Item Volume
1 quarts
Item Weight
1846 g
Package Information
Bottle
Percentage assay
85

📦15-gallon secure bulk packaging

🧪85% high-purity concentration

⚙️Industrial-grade corrosion control

€ 4407.32

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Description

⚡ Elevate your industrial edge with 85% pure power!

POWERFUL 85 PURITY - Maximize efficiency with premium-grade phosphoric acid for demanding industrial tasks.
PRECISION P H CONTROL - Optimize chemical processes and water treatment with reliable, consistent pH adjustment.
SAFE DURABLE BULK PACKAGING - Transport and store confidently with robust 15-gallon carboy designed for industrial use.
RUST BUSTING INDUSTRIAL CLEANER - Keep your metal surfaces pristine and corrosion-free with expert-level cleaning power.
MADE IN AMERICA TRUSTED QUALITY - Benefit from rigorous US manufacturing standards ensuring superior chemical performance.

This 85% technical grade phosphoric acid, manufactured in America, offers high-purity chemical strength ideal for pH control, corrosion inhibition, and metal cleaning in industrial environments. Packaged securely in a durable 15-gallon carboy, it ensures safe handling and long-term storage for demanding applications.

Specifications

% Assay of Chemical(s)	85
ASIN	B084GCGMPX
Best Sellers Rank	#316,798 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #704 in Chemical Solvents
Brand Name	Alliance Chemical
Container Type	Bottle
Customer Reviews	5.0 5.0 out of 5 stars (1)
Included Components	Chemical
Item Form	Phosphoric acid appears as a clear colorless liquid or transparent crystalline solid. The pure solid melts at 42.35 °C and has a density of 1.834 g / cm3. Liquid is usually an 85% aqueous solution. Shipped as both a solid and liquid. Corrosive to metals and tissue. Used in making fertilizers and detergents and in food processing.
Item Weight	1846 g
Manufacturer	Alliance Chemical
Model Number	15 Gallon
Part Number	00850034190617
UPC	850054938879
Volume	1 quarts

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€ 4407.32

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

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