Phosphoric Acid Rust Remover
MaybeSearch demand grew +282.3% this quarter. But shoppers spend an estimated $18K a year here, so Phosphoric Acid Rust Remover is a Maybe.
- Flapen Score
- 60 / 100Top 9% of 7,287 Automotive niches · +11 vs the category median of 4960
- Market size
- $18K/yr23K searches / yr
- 90-day growth
- +282.3%search demand this quarter
- Competition
- 51%top-5 click share · 23 brands · 154 sellers
Flapen Score
Phosphoric Acid Rust Remover against its category
The dotted line is the Automotive average. Past it, Phosphoric Acid Rust Remover is stronger. Inside it, weaker.
Market
The Phosphoric Acid Rust Remover market on Amazon at a glance
Shoppers on Amazon United States searched for Phosphoric Acid Rust Remover 23K times last year and spent an estimated $18K. The top 5 brands take 62% of clicks. Flapen scores it 60 out of 100, a Maybe.
01 · Demand
An estimated 2.5% of those searches ended in a purchase.
Shoppers searched for this 23K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 2.5% of those searches ended in a purchase. Searches in the last 90 days moved +282.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $18K a year.
- Searches, last 12 months
- 23K
- Growth, 90 days vs prior 90
- +282.3%
- Conversion, latest week
- 2.5%
- Market size, estimated
- $18Ka year
- Top search term
- phosphoric acid rust remover14K searches a year
02 · Price
A sale here is worth $32.07.
Listings sell for $32.07 on average, from $8.80 to $89.61. Amazon reports units sold in ranges. This niche sold 750 to 1K a year. The average listing sells 0 to 100 of them. At $32.07 that is $0 to $3K a year per listing.
- Average price
- $32.07inside the $15 to $100 sweet spot
- Price range
- $8.80–$89.61
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 750–1K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$3K
- Returns
- 0.4%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
87% of listings pay for placement with sponsored ads. 77% ship with Prime. On an average day, 2.1% of listings are out of stock. The average listing ranks #712 within Finishing. It carries 2,417 reviews at 4.46 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 87%
- Prime listings
- 77%
- Out of stock, average day
- 2.1%
- Average rank
- #712in Finishing
- Average rating
- 4.46 starsAmazon United States average 4.42 stars
- Average reviews
- 2,417per listing
- Listings tracked
- 31
04 · Newcomers
3 of last year's 5 launches cleared the first-year sales bar.
5 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 60 months on average, so the names here are established.
- Launched, last 12 months
- 5
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 60 months
Products
Top Phosphoric Acid Rust Remover products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 8, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Ospho 605 Metal Treatment 32 Fl Oz (Pack of 1)
- Price
- $23.19
- Rating
- 4.7/5
- Reviews
- 1,938
- Age
- 18y ago

Ospho Metal Treatment Gallon - Rust Converter for Metal Surfaces - Rust Remover for Cars Boats Trucks 1 Gallon
- Price
- $36.49
- Rating
- 4.6/5
- Reviews
- 1,426
- Age
- 18y ago

Phosphoric Acid 85% - High Purity Industrial Grade - Premium Multi-Purpose Use for Cleaning Etching Rust Removal and More. (100mL)
- Price
- $15.97
- Rating
- 4.5/5
- Reviews
- 132
- Age
- 5y ago

Duda Energy 1 Quart / 950ml 85% Food Grade Phosphoric Acid Rust Remover Clean Etch Metal
- Price
- $32.75
- Rating
- 4.8/5
- Reviews
- 214
- Age
- 12y ago

DIYChemicals Phosphoric Acid 85% Rust Remover Wood Stain Remover pH Control High Purity Orthophosphoric Acid for Metal Fertilizers - Made in USA - Half Gallon (64 fl oz)
- Price
- $50.35
- Rating
- 4.5/5
- Reviews
- 73
- Age
- 5y ago
Trending
estimated 90-day click momentum
HORHIZA 2 in 1 Rust Converter & Metal Primer 42 Oz Black Rust Inhibitor Paint for Metal Rust Conversion Paint Heat-Resistant Anti Rust Coating for Car Marine Industrial Chassis
- Price
- $15.24
- Rating
- 4.4/5
- Reviews
- 44
- Age
- 5mo ago

jecudi Ospho Metal Treatment Gallon - Rust Converter for Metal Surfaces - Rust Remover for Cars Boats Trucks - Compatible with Most Vehicle Paints - Suitable for Indoor Use - Bonus Cleaning Towel
- Price
- $45.14
- Rating
- 4.5/5
- Reviews
- 288
- Age
- 2y ago

GuardH Rust Remover Jelly 12 oz | Multi-Purpose Gel for Metal Surfaces Auto Parts Household Items and Antiques
- Price
- $12.45
- Rating
- 4.3/5
- Reviews
- 72
- Age
- 1y ago

Phosphoric Acid 85% - Rust Remover - Lime Cleaner - Scale Remover - UniClean America - USA (Size: 32 fl oz)
- Price
- $28.11
- Rating
- 5.0/5
- Reviews
- 9
- Age
- 3y ago

Rust-Oleum 7830730 Stops Rust Rust Reformer Formula 8 oz Black
- Price
- $12.93
- Rating
- 4.4/5
- Reviews
- 707
- Age
- 19y ago
Newest
by launch date
HORHIZA 2 in 1 Rust Converter & Metal Primer 42 Oz Black Rust Inhibitor Paint for Metal Rust Conversion Paint Heat-Resistant Anti Rust Coating for Car Marine Industrial Chassis
- Price
- $15.24
- Rating
- 4.4/5
- Reviews
- 44
- Age
- 5mo ago

Phosphoric Acid 85% (32 Oz / 946 mL) 85% Phosphoric Acid Food Grade Technical Grade Liquid Rust Remover Metal Cleaner pH Adjuster DIY Applications
- Price
- $22.84
- Rating
- 4.7/5
- Reviews
- 17
- Age
- 12mo ago

GuardH Rust Remover Jelly 12 oz | Multi-Purpose Gel for Metal Surfaces Auto Parts Household Items and Antiques
- Price
- $12.45
- Rating
- 4.3/5
- Reviews
- 72
- Age
- 1y ago

jecudi Ospho Metal Treatment Gallon - Rust Converter for Metal Surfaces - Rust Remover for Cars Boats Trucks - Compatible with Most Vehicle Paints - Suitable for Indoor Use - Bonus Cleaning Towel
- Price
- $45.14
- Rating
- 4.5/5
- Reviews
- 288
- Age
- 2y ago

Phosphoric Acid 85% - Rust Remover - Lime Cleaner - Scale Remover - UniClean America - USA (Size: 32 fl oz)
- Price
- $28.11
- Rating
- 5.0/5
- Reviews
- 9
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 51% of clicks. Leaders hold, but buyers still shop past them.
Brands
23 rising
Sellers
154
Est. top-5 brand share
62%
Top 20: 98%
Est. top-5 click share
51%
Top 20: 91%
Open market
30%
- Ospho23%
- Evapo-Rust11%
- CCS CONSOLIDATED CHEMICAL & SOLVENTS10%
- Chemboys9%
- Duda Energy9%
- Rust-Oleum7%
Reviews and returns
What reviews say buyers love and hate about Phosphoric Acid Rust Remover
We read the reviews and the return reasons for every product selling here.
“looks rusty”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Phosphoric Acid Rust Remover questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









