A cationic product is incompatible with existing chemicals
Observe deposits and efficacy in water samples containing the complete formulation.
Hydrochloride salt of dodecylguanidine.
Open technical diagram · PubChem CID 61649
Non-oxidizing biocides / Chemical
Dodecylguanidine hydrochloride
Dodecylguanidine hydrochloride · DGH
A non-oxidizing ingredient to evaluate for industrial recirculating water. Its cationic character, the complete formulated product and compatibility with actual water samples are selection priorities; DGH/Bronopol blends require separate evaluation as complete formulations.
Product uses
An active component in defined industrial recirculating-water products.
Bring an existing model or purchasing specification directly into the discussion.
Purchasing informationView parameter guidance ↓
- Chemical identity / CAS
- 13590-97-1Dodecylguanidine hydrochloride ↗
- Physical form / Type
- Actual delivery form, color and solvent must match product documents.
- Key purchasing comparisons
- DGH active content and product compositionAnionic chemicals and suspended solidsFoaming and process quality
- Packaging and delivery
- The packaging label must specify the hydrochloride; confirm solvent compatibility, withdrawal connections and differentiation from blend packaging.
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
Dodecylguanidine hydrochloride; not PHMB or other guanidine polymers.
Appearance and delivery form
Product solvent, color and delivery form must match actual supply documents.
Identity note
DGH is dodecylguanidine hydrochloride. The hydrochloride, acetate and free guanidine are different identities and cannot be combined in purchasing under dodecylguanidine or guanidines; DGH is also distinct from polymeric PHMB.
02 / Specification selection
Key purchasing parameters
| Items to confirm | Relevance to purchasing and use |
|---|---|
| DGH active content and product composition | Distinguish single-active products from blends. |
| Anionic chemicals and suspended solids | Check interactions and efficacy. |
| Foaming and process quality | Validate with actual circulation conditions. |
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
- Not a default option for all industrial water.
- Recirculating-water use does not extend to drinking water or food.
- Blend uses do not automatically apply to single-compound raw material.
04 / Common challenges
Common issues and responses
The raw-material name is confused with PHMB
Identify using the full English name and SDS.
Using blend results to promise single-active performance
Require trials matching the single-active product.
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
Are DGH and PHMB the same?
No. One is a specific small-molecule salt; the other is a polymeric biguanide category.
Why limit it to specific recirculating-water uses?
Available manufacturer documents cover those uses; other uses require separate evidence.
How should blends be compared?
Compare complete ingredients, conditions and trial results, not total content alone.
Related selection options
Compare related products further.
Related products are not necessarily direct substitutes; verify each intended use.
Constituent structuresSpecialized formulations · Specialized formulation
DGH / Bronopol blends
DGH + BP
A blend type supported by manufacturer information for industrial cooling water. Consider DGH's cationic character together with Bronopol's operating requirements, with particular attention to compatibility of the complete formulation.
Representative homologueNon-oxidizing biocides · Chemical
Benzalkonium chlorides
BKC / BAC
Quaternary ammonium active ingredients. Industrial water selection must identify the relevant alkyl chain distribution and complete formulated product. Documentation for surface disinfection, industrial water biocidal treatment and pool algae control is not interchangeable.
Polymer repeat unitNon-oxidizing biocides · Specialized formulation
Polyhexamethylene biguanide systems
PHMB
A biguanide approach used in certain alternative pool disinfection systems and industrial blends. Fully verify system conversion, supporting oxidation and maintenance procedures; it cannot simply be added to an existing chlorine program.
Related technical articles
Appearance and quality
DGH becomes turbid or crystallizes after low-temperature exposure: how can effects on delivery be assessed?
Some commercial DGH formulations show temperature-dependent appearance changes. Turbidity alone does not establish active-ingredient failure, and another brand's instructions cannot guarantee an unexplained condition is acceptable.
Dodecylguanidine hydrochlorideRecirculating Cooling Water & Heat ExchangersProducts and specifications
Read and verify →
Formulation differences
Why does the solvent system change purchasing, storage and transport review for otherwise similar DGH formulations?
The same DGH active does not mean identical delivery conditions. Carrier systems may change physical properties and the focus of storage, transport and equipment checks; purchasing should compare more than active percentage.
Dodecylguanidine hydrochlorideRecirculating Cooling Water & Heat ExchangersProducts and specifications
Read and verify →
Compatibility limits
DGH documentation states chlorine compatibility: why still check residual chlorine conditions for DGH blends?
One active ingredient's compatibility statement cannot unconditionally cover every formulation containing it. DGH single-active products and combinations containing other biocides require separate review of complete product conditions.
Dodecylguanidine hydrochlorideRecirculating Cooling Water & Heat ExchangersCompatibility and process
Read and verify →ENVO · Purchasing and application support
Discuss your specific dodecylguanidine hydrochloride requirements.
Start with a product name, current model, water-quality report or destination documentation requirements.