---
title: "Sodium Thiosulfate — $175K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/sodium-thiosulfate"
last_updated: "2026-08-10T01:58:52.882Z"
locale: en
meta:
description: "Niche score 60/100 · $175K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 60/100 · $175K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Sodium Thiosulfate — $175K/yr Amazon US Niche (2026) - Flapen"
---
# **sodium thiosulfate**
**Worth a look**
Shows low returns (1.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 36Growth 70Conversion 85Competition 41Returns 95Price range 56Avg price 95Brand share 56Review moat 93Quality gap 18
**Returns**
**Incredible****1.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$37.97**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****139.47**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****9.6%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Good****+52.7%**
90-day search growth — must beat 0% to launch
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Price range**
**Good****$13.16–$163.68**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****60%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$175K**
$175K/yr · 48K searches
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, sodium thiosulfate is a $175K/yr Amazon United States market (48K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 60/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **sodium thiosulfate market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$114K–$152K**
- units × avg price
- **Conversion rate**
- **9.6%**
- **Avg BSR**
- **#226**
- **Page quality**
- **0%**
- **Prime**
- **65%**
- **Sponsored**
- **65%**
- **Out of stock**
- **3.2%**
- **Avg brand age**
- **74 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **—flat
**Sellers**
**26**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**60%**
Top 20: 100%
**Open market**
**23%**
- ChemCenter23% - MAV AquaDoc18% - In The Swim13% - BioGuard9% - HOLEVINT8% - UniClean America6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +52.7% search growth over the last 90 days.
2K1KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/sodium-thiosulfate/trend)
## **Top sodium thiosulfate search terms**
- **sodium thiosulfate**43K/yr+54.9%7.8% conv. - **sodium thiosulfate crystals**3K/yr-9.6%8.4% conv. - **thiosulphate**2K/yr+192.7%0.2% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/sodium-thiosulfate/search-terms)
## **Top sodium thiosulfate 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.
0%10%$18K20%$35K30%$53K40%$70K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Sodium Thiosulfate Fine Crystals 99.5% min. 500 Grams (1.1 lb.)**ChemCenter**$18.92**4.7★476 rev](https://www.amazon.com/dp/B00JERVY5A) [2**AquaDoc Chlorine Neutralizer for Pool & Hot Tub - 1 lb - Sodium Thiosulfate Formula to Help Reduce Chlorine Levels - Spa and Pool Chemicals Made in USA**MAV AquaDoc**$20.30**4.6★195 rev](https://www.amazon.com/dp/B0DZNYL4TS) [3**In The Swim Chlorine Neutralizer for Swimming Pools - Quickly Reduces Chlorine Sanitizer Levels - 90% Sodium Thiosulfate - 2.25 Pounds**In The Swim**$20.69**4.7★542 rev](https://www.amazon.com/dp/B002WKK86M) [4**BioGuard ChemOut Chlorine & Bromine Neutralizer 2 lb Single Pack**BioGuard**$24.77**4.6★306 rev](https://www.amazon.com/dp/B006MHSHRS) [5**DIYChemicals Sodium Thiosulfate | Chlorine Neutralizer Solution Chlorine Remover for Pools Pond Aquarium Hot Tubs Hydroponic Ecosystems Plants - 40LB**Chemboys**$159.40**4.7★34 rev](https://www.amazon.com/dp/B094Q5BMZ1)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**AquaDoc Bromine Neutralizer for Pool & Hot Tub - 1 lb - Sodium Thiosulfate Formula to Reduce Bromine Levels - Spa and Pool Chemicals Made in USA**MAV AquaDoc**$18.25**195 rev2mo ago](https://www.amazon.com/dp/B0GZ95Y58X) [**Pool Chlorine Neutralizer - Fast-Acting Sodium Thiosulfate Formula - 1 Lbs - Quickly Reduces Chlorine & Bromine Levels for Pools & Hot Tubs (1 LB)**CFUTABOH**$14.64**6 rev3mo ago](https://www.amazon.com/dp/B0GVRBWLMV) [**Sodium Thiosulfate Pool and Hot Tub Bromine and Chlorine Neutralizer Chemical Level Reducer Formula (1 lb)**HOLEVINT**$13.77**9 rev7mo ago](https://www.amazon.com/dp/B0G6JSS21N) [**Sodium Thiosulfate Pool and Hot Tub Bromine and Chlorine Neutralizer Chemical Level Reducer Formula (2 lb)**HOLEVINT**$24.30**9 rev7mo ago](https://www.amazon.com/dp/B0G6JYVWRN) [**Sodium Thiosulfate Chlorine Neutralizer Granules (1 LB) Chlorine Remover for Pools Ponds Aquariums Hot Tubs Hydroponic Ecosystems Plants**INTOMYTH**$13.16**3 rev8mo ago](https://www.amazon.com/dp/B0G2QZKV3R)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**AquaDoc Bromine Neutralizer for Pool & Hot Tub - 1 lb - Sodium Thiosulfate Formula to Reduce Bromine Levels - Spa and Pool Chemicals Made in USA**MAV AquaDoc**$18.25**4.6★**▲ 158%**](https://www.amazon.com/dp/B0GZ95Y58X) [**Pool Chlorine Neutralizer - Fast-Acting Sodium Thiosulfate Formula - 1 Lbs - Quickly Reduces Chlorine & Bromine Levels for Pools & Hot Tubs (1 LB)**CFUTABOH**$14.64**4.7★**▲ 157%**](https://www.amazon.com/dp/B0GVRBWLMV) [**Sodium Thiosulfate Chlorine Neutralizer Granules (1 LB) Chlorine Remover for Pools Ponds Aquariums Hot Tubs Hydroponic Ecosystems Plants**INTOMYTH**$13.16**5.0★**▲ 152%**](https://www.amazon.com/dp/B0G2QZKV3R) [**UniClean America Sodium Thiosulfate Powder (5 Lb Poly Bag) - Chlorine Neutralizing - Swimming Pool Water Treatment Powder**UniClean America**$27.51**5.0★**▲ 130%**](https://www.amazon.com/dp/B0BD5TV6TL) [**Pacific Pelican Sodium Thiosulfate (Sodium Hyposulfite) (Na2S2O3*5H2O) - Chemical (0.5lb)**Pacific Pelican**$13.50**4.6★**▲ 95%**](https://www.amazon.com/dp/B0D8K2TYRR)
**~~View all trending →~~**
## **What buyers say about sodium thiosulfate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Excellent product”*
**Advertised Vs Actual Product**14%
*“As advertised”*
**Value For Money**11%
*“Great value for the cost”*
**Ease Of Use**9%
*“Easy to use, works well”*
**Instructions/User Manual/Troubleshooting**7%
*“The instructions are clear”*
**Smell**5%
*“there is no odor”*
**Durability**4%
*“A Pound Thatll Last Me a Season and Then Some”*
**Strength**4%
*“Super effective”*
**Water Resistance**4%
*“Finally can swim”*
**Pureness**4%
*“The crystals dissolve incredibly fast”*
### **What buyers complain about **
**Advertised Vs Actual Product**15%
*“Poor listing”*
**Contamination**8%
*“Managing water chemistry can sometimes become frustrating”*
**Instructions/User Manual/Troubleshooting**7%
*“trying to follow directions on all this stuff is crazy”*
**Smell**6%
*“I wasnt sure if they could smell something I couldnt”*
**Functionality-Overall**6%
*“it was slowly coming down”*
**Measurement/Reading Accuracy**6%
*“find yourself stuck with a spiked chemical reading”*
**Leak-Proof**6%
*“I literally had is barely set to leak bromine”*
**Water Resistance**4%
*“especially when water isn't perfect from the hose”*
**Size-Overall**4%
*“The change implemented is small”*
### **Top return reasons **
**Leak-Proof**21%
**Value For Money**19%
**Advertised Vs Actual Product**15%
**Size-Overall**14%
**Functionality-Overall**13%
**Contamination**9%
**Certifications**4%
**Product Condition**3%
**Maintenance And Repair**3%
## **Common questions**
- **Is sodium thiosulfate profitable to sell on Amazon United States?**
- The niche generates $175K/yr across 17 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is +52.7%. Flapen's verdict: Worth a look (60/100).
- **How competitive is the sodium thiosulfate niche?**
- 11 brands and 26 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in sodium thiosulfate?**
- Top complaints mined from reviews: Advertised Vs Actual Product, Contamination, Instructions/User Manual/Troubleshooting. The return rate is 1.0%.
- **When does demand for sodium thiosulfate peak?**
- Demand peaks in May–Jun–Jul; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the sodium thiosulfate niche?**
- Listings span $13.16–$163.68; the average listing price is $37.97 (sweet spot $15–$100). The average incumbent carries 139 reviews — the moat a new listing must climb.
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