Purchasing DCDMH as bromine tablets
Check the full English name and composition.
1,3-Dichloro-5,5-dimethylhydantoin.
Open technical diagram · PubChem CID 8360
Chlorine and chlorine dioxide / Chemical
Dichlorodimethylhydantoin
1,3-Dichloro-5,5-dimethylhydantoin · DCDMH
A chlorine-containing member of the halogenated hydantoin family, retained for specialized identity and label verification. Public historical review documents do not establish current use authorization for the product to be supplied.
Product uses
Screening of a limited approach; specific water-treatment uses still require current product evidence.
Bring an existing model or purchasing specification directly into the discussion.
Purchasing informationView parameter guidance ↓
- Chemical identity / CAS
- 118-52-51,3-Dichloro-5,5-dimethylhydantoin ↗
- Physical form / Type
- NOAA describes the substance as a white powder; formed products require separate form verification.
- Key purchasing comparisons
- Exact chemical identityCurrent product labelSingle active or halogenated hydantoin mixtureEquipment approval and available-halogen basis
- Packaging and delivery
- Verify raw material or formed formulation, sealed moisture-resistant packaging, ingredient labels and corresponding use documents before confirming actual packaging options.
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
1,3-Dichloro-5,5-dimethylhydantoin; distinct from bromine-containing BCDMH and DBDMH.
Appearance and delivery form
NOAA describes a white powder; formulated-product forms require separate verification.
Identity note
DCDMH means dichlorodimethylhydantoin. Its CAS identifies the chemical, not authorization for a particular water system; distinguish it from brominated hydantoins and other alkyl-substituted hydantoins.
02 / Specification selection
Key purchasing parameters
| Items to confirm | Relevance to purchasing and use |
|---|---|
| Exact chemical identity | Avoid confusion with BCDMH. |
| Current product label | Historical registrations cannot establish current purchasing eligibility. |
| Single active or halogenated hydantoin mixture | Mixture uses cannot be assigned to pure raw material. |
| Equipment approval and available-halogen basis | Determine compatibility with the existing dosing system. |
Include parameters, test methods and acceptance checkpoints in purchasing requirements to compare specifications.
03 / Applications and limits
Applications and conditions of use
First confirm the specific use and product label
This entry is retained for specialized document verification. Current evidence is insufficient to automatically associate it with a specific water environment. Provide current product information, intended use and country or region of use before assessing suitability.
Additional checks before use
- Not automatically associated with drinking-water, pool or industrial-water applications.
- Historical reviews do not establish current supply or approval.
- Manage as an oxidizing chemical under the corresponding SDS and packaging requirements.
04 / Common challenges
Common issues and responses
Using old registration to establish current sale eligibility
Require current holder, product and destination documents.
Using blend performance to market a single compound
Require specific use documents for the single compound or complete product separately.
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
Does DCDMH contain bromine?
Its chemical name identifies dichlorodimethylhydantoin; it must not be interpreted as a bromine ingredient.
Why list it without directly recommending applications?
Its identity is clear, but the current uses of the proposed supplied product remain unconfirmed.
Are old EPA documents sufficient?
They show historical technical approaches only; check current documents for the specific product.
Related selection options
Compare related products further.
Related products are not necessarily direct substitutes; verify each intended use.
Examples in this familyBromine products · Specialized formulation
Halogenated hydantoin formulations
Hydantoin blends
A formulated product category containing specific halogenated hydantoins such as BCDMH and DCDMH. Verify purchasing requirements against the complete product label; a blend's uses cannot be assigned to each individual raw material.
Molecular structureBromine products · Chemical
Bromochlorodimethylhydantoin
BCDMH
For selecting formulated products with defined uses in spas, pools and industrial recirculating water. Compare available halogen, finished-product composition and feeder compatibility to identify a specification matching the existing system.
Molecular structureChlorine and chlorine dioxide · Chemical
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.
Related technical articles
Chemical identity
DCDMH is not BCDMH: how can one character in a Chinese order change technical verification?
DCDMH, BCDMH and DBDMH are related halogenated hydantoins with different halogens. Similar names or a generic white-tablet image can misdirect identity checks, analytical bases and use reviews together.
Read and verify →
Assessing documentation
DCDMH has chemical information but no target-use documents: where should purchasing review stop?
Confirming that a chemical exists does not establish suitability for a customer's specific water environment. Review DCDMH through three traceable stages: identity, supply specification and use confirmation.
Read and verify →
Interpreting sources
Reading an EPA halogenated hydantoin review: how can historical documentation avoid being mistaken for current product authorization?
Even authoritative sources require checks of date, document type and scope. A halogenated hydantoin review helps explain DCDMH's family, but cannot replace current compliance verification for a particular model in a particular market.
Read and verify →ENVO · Purchasing and application support
Discuss your specific DCDMH requirements.
Start with a product name, current model, water-quality report or destination documentation requirements.