Oilfield Chemicals
Product Position:
The Triazine Biocide shares the same active ingredient as the H2S scavenger — hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine (CAS 4719-04-4) — but serves a different purpose. As a biocide, the triazine ring slowly releases formaldehyde in water, which alkylates microbial proteins and denatures them. It is a formaldehyde-releasing broad-spectrum biocide.
The Triazine Biocide shares the same active ingredient as the H2S scavenger — hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine (CAS 4719-04-4) — but serves a different purpose. As a biocide, the triazine ring slowly releases formaldehyde in water, which alkylates microbial proteins and denatures them. It is a formaldehyde-releasing broad-spectrum biocide.
The product is effective against sulfate-reducing bacteria (SRB), saprophytic bacteria (TGB) and iron bacteria (IB) in oilfield produced water. It is widely used for microbial control in water injection systems, gathering pipelines, storage tanks and cooling water circuits.
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Item |
Specification |
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Model |
HDC-TB Series (TB-78 / TB-80) |
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Packaging |
25 kg plastic pail (sample) |
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Storage Temperature |
2-35°C, sealed and away from light |
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Shelf Life |
12 months in original sealed packaging |
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Transport Class |
UN3082 Environmentally Hazardous Substance, Liquid, N.O.S. |
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Safety Notes |
Wear gloves and goggles; avoid skin and eye contact |
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Item |
Parameter |
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Chemical Name |
Hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine |
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CAS No. |
4719-04-4 |
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Molecular Formula |
C9H21N3O3 |
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Molecular Weight |
219.28 |
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Synonyms |
Sannanyou, Grotan BK, MEA Triazine |
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Item |
TB-78 |
TB-80 |
Test Standard |
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Appearance |
Light yellow viscous liquid |
Light yellow viscous liquid |
Visual |
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Active Content |
≥78% |
≥80% |
Titration |
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Density |
1.15-1.17 g/cm³ |
1.16-1.18 g/cm³ |
GB/T 4472 |
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Viscosity |
0.25-0.35 Pa·s |
0.28-0.38 Pa·s |
GB/T 10247 |
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pH |
9.5-11.5 |
9.5-11.5 |
GB/T 9724 |
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MEA Content |
≤7.4% |
≤7.4% |
GC |
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Water Solubility(24℃) |
≥1 g/100 mL |
≥1 g/100 mL |
Visual |
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Alkalinity Value |
≥600 mg KOH/g |
≥610 mg KOH/g |
Titration |
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Biocidal Efficacy (SRB) |
≥99.9% |
≥99.9% |
SY/T 5890 |
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Biocidal Efficacy (TGB) |
≥99.5% |
≥99.9% |
SY/T 5890 |
• Broad-spectrum and high-efficiency
Effective against SRB, TGB and IB — biocidal rate ≥99.9% for SRB
• Formaldehyde slow-release mechanism
Releases formaldehyde gradually through hydrolysis, maintaining sustained biocidal concentration for 24-72 hours
• Excellent water solubility
Fully miscible with water — can be injected directly into produced water without organic solvent dilution
• Low corrosivity
No significant corrosion to carbon or stainless steel — unlike chlorine-based biocides that accelerate localized corrosion
• Good compatibility
Compatible with corrosion inhibitors, scale inhibitors, demulsifiers and other oilfield chemicals — no precipitation or efficacy loss
• Cost-effective
Compared with glutaraldehyde or DBNPA, achieves equivalent biocidal performance at 1/3 to 1/2 the cost
● Water injection systems — kills SRB in injection water, preventing H2S generation and pipeline corrosion
● Gathering pipelines — periodic batch treatment to control biofilm and microbially-influenced corrosion (MIC)
● Crude oil storage tanks — injected into the water phase to inhibit bacterial growth in bottom water
● Industrial water systems — paper mill white water, paint emulsions, metalworking fluids
Dosing Guidelines
Two dosing methods are used: continuous injection and batch (slug) treatment. Continuous injection is suitable for water injection stations using metering pumps. Batch treatment is used for pipelines and tanks — a higher concentration is dosed every 3-7 days, maintained for 24 hours before resuming normal operation.
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Scenario |
Method |
Concentration |
Frequency |
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Water injection |
Continuous |
20-50 mg/L |
Continuous |
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Pipeline |
Batch/slug |
100-200 mg/L |
Every 3-7 days |
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Storage tank |
Batch/slug |
100-300 mg/L |
Every 7-14 days |
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Circulating water |
Continuous or batch |
50-100 mg/L |
Adjust by bacteria count |
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Product
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