Tablets fit the feeder but delivery is unstable
Check dimensions, dosage form and equipment approval, not appearance alone.
Active ingredient; tablet and granular grades share this chemical identity.
Open technical diagram · PubChem CID 6909
Chlorine and chlorine dioxide / Chemical
Trichloroisocyanuric Acid
Trichloroisocyanuric acid · TCCA
For pool disinfection products with defined uses. Select specifications according to available chlorine, dosage form and dosing equipment, while considering cyanuric acid management and operating costs.
Product uses
A pool-water disinfection candidate using products with explicit pool uses and matched dosing systems.
Bring an existing model or purchasing specification directly into the discussion.
Purchasing informationView parameter guidance ↓
- Chemical identity / CAS
- 87-90-1Trichloroisocyanuric acid active ingredient ↗
- Physical form / Type
- The substance is a white crystalline solid; powder, granules or pressed-tablet delivery forms require separate confirmation.
- Key purchasing comparisons
- Available chlorine and test methodsTablet dimensions and feederCyanuric acid and makeup/dischargeMoisture, insolubles and packaging
- Packaging and delivery
- Specify powder, granules or tablets and availability of bags or drums in the inquiry; confirm tablet dimensions, inner-packaging moisture resistance and handling method separately.
Identity and physical form identify the product; specific concentration, grade, packaging and uses are governed by mutually confirmed formulated-product documents.
01 / Product and applications
Uses and product form
Chemical identity / Technical type
A chlorinated isocyanuric acid compound, chemically distinct from SDIC; both involve cyanuric acid management after use.
Appearance and delivery form
Specific powder, granule or tablet delivery forms require supply-document confirmation; tablet dimensions and auxiliaries cannot be inferred from the name.
Identity note
TCCA is trichloroisocyanuric acid; this CAS identifies the active compound. Tablets with auxiliaries or compound formulations require full composition checks; CAS alone does not establish available chlorine or dissolution performance.
02 / Specification selection
Key purchasing parameters
| Items to confirm | Relevance to purchasing and use |
|---|---|
| Available chlorine and test methods | Define settlement and acceptance bases; active-ingredient content is not available chlorine. |
| Tablet dimensions and feeder | Determines stable chemical delivery in existing equipment. |
| Cyanuric acid and makeup/discharge | Long-term use requires pool testing to assess accumulation. |
| Moisture, insolubles and packaging | Relevant to transport/storage and dissolution/delivery performance. |
Include parameters, test methods and acceptance checkpoints in purchasing requirements to compare specifications.
03 / Applications and limits
Applications and conditions of use
These are starting points for conditional verification. Specific product suitability still requires joint confirmation through product documents, operating conditions and destination requirements.
Additional checks before use
- Pool products cannot be applied directly to drinking water or food processing.
- CDC does not recommend cyanuric acid or chlorine products containing cyanuric acid in hot tubs.
- Different oxidants must not share packaging or feeders simply because both are disinfectants.
04 / Common challenges
Common issues and responses
Chlorine residual is detected but management effectiveness declines
Check cyanuric acid, pH, load and pool-maintenance records together.
Low raw-material prices increase maintenance
Include makeup water, monitoring, dosing and packaging losses in purchasing comparisons.
05 / Documents and evidence
Documents and downloads
TDS / SDS / COARequest by specific model, use and batchProduct purchasing checklistDownload directly and add existing specifications and operating conditions
View public technical references
These documents support technical categories and use limits, not ENVO certifications or customer cases. Verification date: 2026-10-26.
06 / Frequently asked questions
Purchasing FAQs
Can TCCA and SDIC be interchanged solely by available chlorine?
No. Also compare dosage form, dissolution/delivery, pool conditions and equipment requirements.
Why ask about cyanuric acid?
Stabilized chlorine products affect cyanuric acid management; assess together with chlorine residual and water quality.
What minimum information should be prepared for purchasing?
Pool type, equipment model, desired packaging and current pool-water reports support initial specification verification.
Related selection options
Compare related products further.
Related products are not necessarily direct substitutes; verify each intended use.
Hydration formsChlorine and chlorine dioxide · Chemical
Sodium Dichloroisocyanurate
SDIC / NaDCC
For pool and portable drinking-water disinfection products with defined uses. Distinguish anhydrous and dihydrate forms, and select specifications according to the application, dosage form and documentation requirements.
Sample photographChlorine and chlorine dioxide · Chemical
Calcium Hypochlorite
Ca(ClO)₂
For pool, water-supply and effluent disinfection where the corresponding use applies. Purchasing priorities are available chlorine, particle size and insolubles, together with calcium loading in the water and dosing equipment.
Sample photographPrecursors and supporting products · Auxiliary product
Cyanuric acid stabilizer
CYA
A stabilizing auxiliary for applicable pool chlorine systems. It is not a standalone disinfectant. Stabilized chlorine products also affect cyanuric acid management; test before deciding whether additional supplementation is needed.
Related technical articles
Equipment and dosing
TCCA tablets have the same dimensions: why is feeder chlorine delivery still unstable?
Fitting inside a feeder does not make tablets interchangeable. When chlorine delivery fluctuates, compare tablet batches, equipment water circuits and operating loads together, distinguishing material changes from equipment changes.
Read and verify →
Testing and assessment
Chlorine residual suddenly reads zero during TCCA use: check testing or dosing first?
A zero reading may indicate insufficient residual or abnormal test conditions. Recheck according to the test method before addressing chemical supply and loading, preventing an incorrect reading from triggering an incorrect adjustment.
Read and verify →
Purchasing and delivery
Seasonal pool TCCA purchasing: how can low-cost full-season stock avoid becoming an inventory burden?
Organize seasonal pool purchasing by operating phase, inventory turnover and batch acceptance. When comparing full-season prices, include package integrity, storage conditions and actual consumption records in the plan.
Read and verify →ENVO · Purchasing and application support
Discuss your specific trichloroisocyanuric acid requirements.
Start with a product name, current model, water-quality report or destination documentation requirements.