Is phosphoric acid profitable to sell on Amazon United States?

The niche generates $120K/yr across 19 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +106.3%. Flapen's verdict: Worth a look (59/100).

How competitive is the phosphoric acid niche?

12 brands and 44 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 75% of demand.

What do buyers complain about in phosphoric acid?

Top complaints mined from reviews: Rusts/Corrodes, Leak-Proof, Value For Money. The return rate is 0.0%.

When does demand for phosphoric acid peak?

Demand peaks in Apr–May–Jun; the busiest month runs 3.0× the quietest.

What does it cost to enter the phosphoric acid niche?

Listings span $6.35–$67.33; the average listing price is $33.22 (sweet spot $15–$100). The average incumbent carries 299 reviews — the moat a new listing must climb.

phosphoric acid

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$33.22

avg listing price — sweet spot $15–$100

Growth

Great+106.3%

90-day search growth — must beat 0% to launch

Review moat

Great298.89

avg incumbent reviews — the moat a new listing must climb

Price range

Great$6.35–$67.33

cheapest to priciest tracked listing — scored on the share inside $15–$100

Brand share

Good75%

top-5 brand share — brands hold most of the demand

Competition

Okay61%

top-5 click share — leaders hold, buyers still browse

Conversion

Okay3.1%

search→purchase rate — share of searches ending in a sale

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Okay$120K

$120K/yr · 115K searches

Signals Trending Low Review Barrier

According to Flapen's Amazon United States niche tracking, phosphoric acid is a $120K/yr Amazon United States market (115K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 59/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

phosphoric acid market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $133K–$166K; units × avg price
Conversion rate: 3.1%
Avg BSR: #628
Page quality: 0%
Prime: 47%
Sponsored: 68%
Out of stock: 2.6%
Avg brand age: 88 months
Avg seller age: 174 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 rising

Sellers

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

61%

Top 20: 100%

Open market

18%

Duda Energy20%
Chemboys15%
CCS CONSOLIDATED CHEMICAL & SOLVENTS14%
Miracle Sealants14%
Ospho12%
Alliance Chemical7%
Open — no brand owns it (6 brands, 18%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +106.3% search growth over the last 90 days.

Peak months: Apr, May, Jun · busiest ÷ quietest = 3.0×

Open Trend

Top phosphoric acid search terms

phosphoric acid99K/yr +120.2%3.0% conv.
phosphoric acid powder4K/yr +248.3%1.5% conv.
phosphoric acid 85%5K/yr +57.4%4.6% conv.
phosphoric acid cleaner5K/yr -51.8%2.1% conv.
phosphoric2K/yr +177.0%0.3% conv.

All search terms

Top phosphoric acid products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 19 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

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)

Chemboys$50.354.5★73 rev

Phosphoric Acid 85% - High Purity Industrial Grade - Premium Multi-Purpose Use for Cleaning Etching Rust Removal and More. (100mL)

CCS CONSOLIDATED CHEMICAL & SOLVENTS$15.974.5★132 rev

Miracle Sealants Phosphoric Acidic Cleaner for Tile Stone Pavers & Masonry Grout Haze Rust Stain & Efflorescence Remover Quart

Miracle Sealants$21.504.2★211 rev

Ospho Metal Treatment Gallon - Rust Converter for Metal Surfaces - Rust Remover for Cars Boats Trucks 1 Gallon

Ospho$36.494.6★1,426 rev

Duda Energy 1 Quart / 950ml 85% Food Grade Phosphoric Acid Rust Remover Clean Etch Metal

Duda Energy$32.754.8★214 rev

Newest

by launch date

Phosphoric Acid 85% (32 Oz / 946 mL) 85% Phosphoric Acid Food Grade Technical Grade Liquid Rust Remover Metal Cleaner pH Adjuster DIY Applications

Talsen Chemicals$22.8417 rev

12mo 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

jecudi$45.14288 rev

2y ago

Alliance Chemical Phosphoric Acid 85% USP Food Grade - 2 Quarts (2 x 32 FL Oz) - for pH Adjustment Food Processing and General Use

Alliance Chemical$39.0650 rev

2y ago

Phosphoric Acid 85% - Rust Remover - Lime Cleaner - Scale Remover - UniClean America - USA (Size : 16 fl oz)

UniClean America$25.949 rev

3y ago

Phosphoric Acid 85% - Rust Remover - Lime Cleaner - Scale Remover - UniClean America - USA (Size: 32 fl oz)

UniClean America$28.119 rev

3y ago

What buyers say about phosphoric acid

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall21%

“Quality product”

Rusts/Corrodes18%

“Workes very well on rust”

Advertised Vs Actual Product10%

“Does exactly as advertised”

Ease Of Use9%

“It was quick”

Value For Money7%

“the cost savings are insane”

Leak-Proof7%

“The liquid was not spilled”

Ease Of Cleaning5%

“Its extremely clean and stable”

Thickness3%

“I like the thickness too”

Taste-Overall3%

“It was delicious”

Size-Overall3%

“Right size for small job”

What buyers complain about

Rusts/Corrodes29%

“RUST IS GONE”

Leak-Proof18%

“Leaked out”

Value For Money11%

“Per ounce price is off”

Functionality-Overall7%

“nothing worked”

Ingredients-Overall5%

“Macsweetie's Acid Phosphate is a throwback to a bygone era when you could go to a local drug store”

Dilute/Watery5%

“Not in liquid form”

Color5%

“in a very short amount of time turned it black”

Strength5%

“STRONG”

Ease Of Cleaning4%

“This bottle is a mess”

Quality-Overall2%

“the company is crap”

Top return reasons

Leak-Proof41%

Advertised Vs Actual Product27%

Magnesium9%

Certifications9%

Stain Resistance5%

Size-Overall5%

Value For Money5%

Common questions

Is phosphoric acid profitable to sell on Amazon United States?: The niche generates $120K/yr across 19 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +106.3%. Flapen's verdict: Worth a look (59/100).
How competitive is the phosphoric acid niche?: 12 brands and 44 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 75% of demand.
What do buyers complain about in phosphoric acid?: Top complaints mined from reviews: Rusts/Corrodes, Leak-Proof, Value For Money. The return rate is 0.0%.
When does demand for phosphoric acid peak?: Demand peaks in Apr–May–Jun; the busiest month runs 3.0× the quietest.
What does it cost to enter the phosphoric acid niche?: Listings span $6.35–$67.33; the average listing price is $33.22 (sweet spot $15–$100). The average incumbent carries 299 reviews — the moat a new listing must climb.