Is this safe for brake rotors and calipers

I'm not sure on that, but try a small spot, and see but I would asked your mechanic if it is, safe to use, Me personally I wouldn't

what is concentration of hydrophoric acid

http://www.loctiteproducts.com/p/s_trmt_naval/technical-data/Loctite-Naval-Jelly-Rust-Dissolver.htm This is a link to the MSDS for the product. The exact concentration of phosphoric acid is a trade secret, but it is between 10% and 30%.

Is this the pink gel or liquid?

It is a jelly, not a liquid. I don't remember if it is pink, but I think so.

I have an old plastic toy with a very rusted metal part. It is a tub with what looks like a metal bell inside. Would this product harm the plastic?

I would say since in comes in a plastic bottle, it is probably okay to assume it would be safe on plastics.

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Henkel/osi Sealants 1381191 8OZ Naval Jelly Rust Dissolver

Henkel/osi Sealants 1381191 8OZ Naval Jelly Rust Dissolver

Product ID: 53598409

Details

Brand
Loctite
Item form
Gel
Material
Acid-based
Special feature
Strong
Specific uses for product
Tools Metal

⏱️Fast-acting formula saves time

⚙️Powerful rust dissolving action

🛠️Restores metal surfaces effortlessly

Description

🛠️ Restore your gear, skip the grind!

CLEAR FORMULA - Transparent solution for precise application without mess.
COMPACT LIGHTWEIGHT - Easy to handle with a sleek 8oz size for on-the-go fixes.
PRECISION RESTORATION - Brings tools and metal parts back to their original glory.
TRUSTED BRAND QUALITY - From Loctite, a name pros rely on for durability and performance.
RUST REMOVAL NO SANDING NEEDED - Say goodbye to tedious wire brushing and sanding.

Henkel/OSI Sealants 1381191 Naval Jelly is a clear, fast-acting rust dissolver designed to restore metal surfaces without the hassle of sanding or scraping. Compact and lightweight at 8oz, it’s perfect for professionals and DIYers aiming to bring tools and parts back to pristine condition quickly and efficiently.

Specifications

ASIN	B000C014ZI
Brand	Loctite
Colour	Clear/Transparent
Compatible Material	Metal, Plastic, Rubber
Container Type	Bottle
Customer Reviews	3.8 3.8 out of 5 stars (3)
Global Trade Identification Number	00079340802766
Item Form	Gel
Item Package Quantity	1
Item Volume	8 Fluid Ounces
Item Weight	0.1 Pounds
Manufacturer	Henkel
Manufacturer Part Number	1381191
Material	Acid-based
Model Number	1381191
Number of Pieces	1
Other Special Features of the Product	Strong, Chemical Resistant
Specific Uses For Product	Tools, Machinery, Metal Surfaces
UPC	079340802766
Unit Count	236.59 millilitre
Viscosity Level	Medium
Water Resistance Level	Not Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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