caustic soda
Worth a lookShows low returns (0.2%), but a small market ($96K/yr) keeps it on the watch list.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Avg price
Incredible$36.36avg listing price — sweet spot $15–$100
Brand share
Good64%top-5 brand share — brands hold most of the demand
Review moat
Good1,015.13avg incumbent reviews — the moat a new listing must climb
Price range
Good$4.61–$151.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Competition
Okay56%top-5 click share — leaders hold, buyers still browse
Growth
Okay+6.3%90-day search growth — must beat 0% to launch
Conversion
Okay2.0%search→purchase rate — share of searches ending in a sale
Market size
Bad$96K$96K/yr · 131K searches
According to Flapen's Amazon United States niche tracking, caustic soda is a $96K/yr Amazon United States market (131K searches/yr). The top 5 brands hold 64% of demand. Demand peaks in Feb–May. Verdict: Worth a look — 51/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
caustic soda market data
- Units sold / yr
- 4K–5K
- avg 100–250/product
- Revenue / yr
- $145K–$182K
- units × avg price
- Conversion rate
- 2.0%
- Avg BSR
- #1,503
- Page quality
- 0%
- Prime
- 61%
- Sponsored
- 61%
- Out of stock
- 1.4%
- Avg brand age
- 64 months
- Avg seller age
- 162 days
Competition & brand share
The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.Brands
19 rising
Sellers
48
Top-5 brand share
64%
Top 20: 100%
Top-5 click share
56%
Top 20: 97%
Open market
31%
- Belle Chemical21%
- Mesliz14%
- MAXTITE14%
- Instant Power8%
- SignMission7%
- BRJR5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +6.3% search growth over the last 90 days.Peak months: Feb, May · busiest ÷ quietest = 1.5×
Top caustic soda search terms
- caustic soda72K/yr
- sosa caustica17K/yr
- soda caustica13K/yr
- caustic soda powder8K/yr
- caustic soda for cleaning6K/yr
- caustic soda beads3K/yr
- soda caustica para destapar caeria4K/yr
- caustic3K/yr
- caustic soda drain cleaner3K/yr
Top caustic soda 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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Sodium Hydroxide - Pure - Food Grade (Caustic Soda Lye) (2 Pound Jar)
Belle Chemical$16.264.8★8,247 rev
Mesliz Caustic Soda Fast-Acting Non-Toxic & Odorless Formula to Clear Blockages Instantly Unblock Clogged Sinks & Pipes with Chimney & Drain Cleaner Flakes 350 Grams
Mesliz$27.105.0★1 rev
MaxTite Caustic Soda Beads - 2 lbs x 2 Pack - 99% Pure Sodium hydroxide - Soap Making Detergent Paper & Textiles Cleaning Drain Opening & More - Packed in USA
MAXTITE$21.004.2★22 rev
Instant Power Crystal Lye Drain Opener Lye Sodium Hydroxide Unclogs Bathroom and Kitchen Sinks Drains Shower Pipes 1 Lb
Instant Power$4.614.4★2,345 rev
The Boyer Corporation Lye for Soap Making Sodium Hydroxide Pure High Test Lye Food Grade Caustic Soda Drain Cleaner and Clog Remover 2.2 lbs.
BRJR$22.124.8★1,768 rev
Newest
by launch date
Earth Nourish Sodium Hydroxide Pellets (Caustic Soda) - 100g / 3.52 Oz | Pellet Form Raw Material for Soap Making DIY Formulations & Industrial Use
Earth Nourish$18.123 rev
CHEMGURU Lye for Soap Making Sodium Hydroxide Pure High Test Lye Food Grade Caustic Soda Drain Cleaner and Clog Remover 2 lbs.
CHEMGURU$18.7629 rev
Chemwell Caustic Soda (2 lbs) - Pure Sodium Hydroxide Lye for Soap Making Cleaning Drain Opening or Maintenance & Industrial Use
Chemwell$16.6727 rev
BELL BIRD Crystal Lye Drain Opener Lye Sodium Hydroxide Unclogs Bathroom Kitchen Sinks Shower Pipes & Toilets Sink Drain Cleaner Clog Remover for Clogged Drains Bathtub Pipes (1PCS)
Fit Boost$17.59839 rev
Food Grade Lye Sodium Hydroxide - (1lbs or 453g) 100% Pure Caustic Soda Drain Cleaning Soap Making Culinary Use Pretzels Textiles Granules
Miilex$14.98212 rev
Trending
90-day click momentumEarth Nourish Sodium Hydroxide Pellets (Caustic Soda) - 100g / 3.52 Oz | Pellet Form Raw Material for Soap Making DIY Formulations & Industrial Use
Earth Nourish$18.123.8★
Mesliz Caustic Soda Fast-Acting Non-Toxic & Odorless Formula to Clear Blockages Instantly Unblock Clogged Sinks & Pipes with Chimney & Drain Cleaner Flakes 350 Grams
Mesliz$27.105.0★
AAAL Caustic Soda Flakes 420 GM | For Soap Making Drain Cleaning Chimney Cleaner & Drain Cleaner | Soap Making Flakes | 420 GM
ARSHI A ALCAMY LIFE$27.444.0★
CrystalClearlab Chlorine Dioxide Sodium Hydroxide 1lb Pure Lye Soap Making Caustic Soda Beads Uses Detergents Chemical Cleaning & Crafts (1 Bottle)
CrystalClearlab Chlorine Dioxide$14.914.2★
OSHA Danger Sign - Caustic Soda | Plastic Sign | Protect Your Business Construction Site Warehouse & Shop Area | Made in The USA
SignMission$11.030.0★
What buyers say about caustic soda
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“works great for soap”
“good value”
“As Advertised”
“Easy to use”
“cleans very well”
“Best clog remover ever”
“Perfect fit”
“Very Strong”
“Easy to follow instructions”
What buyers complain about
“Does not work as promised”
“Which ever one is clog”
“WASTE OF MONEY”
“misleading”
“Poor review on”
“Had a slow drain”
“If you can read directions they dont make sense”
“Not good for smaller hands”
“Poor cleaning performance”
“Arrives hard as a rock”
Top return reasons
Common questions
- Is caustic soda profitable to sell on Amazon United States?
- The niche generates $96K/yr across 23 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +6.3%. Flapen's verdict: Worth a look (51/100).
- How competitive is the caustic soda niche?
- 19 brands and 48 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 64% of demand.
- What do buyers complain about in caustic soda?
- Top complaints mined from reviews: Functionality-Overall, Jamming/Clogging, Value For Money. The return rate is 0.2%.
- When does demand for caustic soda peak?
- Demand peaks in Feb–May; the busiest month runs 1.5× the quietest.
- What does it cost to enter the caustic soda niche?
- Listings span $4.61–$151.55; the average listing price is $36.36 (sweet spot $15–$100). The average incumbent carries 1,015 reviews — the moat a new listing must climb.