Oilfield Chemicals
Product Position:
The Triazine H2S Scavenger is a water-soluble chemical with hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine as the primary active ingredient, specifically designed for H2S removal during oil and gas production, gathering and transportation. Active concentrations are available at 40%, 60% and 78% to suit different field H2S levels.
The Triazine H2S Scavenger is a water-soluble chemical with hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine as the primary active ingredient, specifically designed for H2S removal during oil and gas production, gathering and transportation. Active concentrations are available at 40%, 60% and 78% to suit different field H2S levels.
Reaction mechanism: The N-H bonds on the triazine ring undergo an irreversible chemical reaction with H2S, converting gaseous H2S into stable water-soluble sulfides that are permanently removed from the system — unlike reversible physical adsorption methods.
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Item |
Specification |
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Model |
HDC-TS Series (TS-40 / TS-60 / TS-78) |
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Packaging |
200L HDP（Net weight approx. 220kg） |
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Storage Temperature |
10-35°C, away from direct sunlight |
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Shelf Life |
12 months in original sealed packaging |
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Compatible Materials |
HDPE, PP, SS 304/316, carbon steel |
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Incompatible Materials |
Copper, brass, aluminum, zinc |
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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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EINECS No. |
225-208-0 |
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Item |
TS-40 |
TS-60 |
TS-78 |
Test Standard |
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Appearance |
Clear to light yellow liquid |
Clear to light yellow liquid |
Clear to light yellow liquid |
Visual |
|
Active Content |
≥40% |
≥60% |
≥78% |
GB/T 6680 |
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Density |
1.05-1.10 g/cm³ |
1.06-1.12 g/cm³ |
1.08±0.02 g/cm³ |
GB/T 4472 |
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pH |
9.5-11.0 |
9.5-11.0 |
9.5-11.0 |
GB/T 9724 |
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Viscosity |
5-15 cP |
10-20 cP |
15-25 cP |
GB/T 10247 |
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Desulfurization Rate |
≥90% |
≥92% |
≥95% |
SY/T 6277-2005 |
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Organic Chlorine |
0.0% |
0.0% |
0.0% |
Q/SH1020 2093 |
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Water Solubility |
Fully miscible |
Fully miscible |
Fully miscible |
Visual |
• Irreversible reaction
Reaction products are water-soluble sulfide compounds that do not re-release H2S at ambient conditions
• High scavenging efficiency
TS-78 achieves ≥95% desulfurization; 1 mole of triazine removes 3 moles of H2S (stoichiometric ratio 1:3)
• Zero organic chlorine
Contains no organic chlorine — eliminates chloride-induced corrosion risk to both stainless and carbon steel
• Biodegradable
Both reaction products and unreacted triazine are biodegradable — no long-term environmental accumulation
• Easy to apply
Fully miscible with produced water; compatible with standard chemical injection skids — no pipeline modification needed
• Low corrosivity
Corrosion rate to carbon steel is significantly lower than aldehyde-based scavengers; no significant corrosion at 25 ppm dosage
● H2S removal from oil and gas well produced fluids — continuous injection via annulus or wellhead
● Natural gas gathering and transportation pipeline — dosed at gas gathering stations to meet H2S specifications
● Refinery pre-desulfurization — applied upstream of amine units to reduce loading
● Storage tanks and vessels — vapor-phase H2S scavenging in crude oil tank headspace
Dosing Guidelines
Continuous injection is the recommended dosing method: install a chemical injection valve and plunger pump at the wellhead or pipeline to uniformly inject the scavenger into the produced fluid. Batch dosing (pouring through the casing) is suitable for intermittent operations but provides less uniform reaction.
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Scenario |
H2S Level |
Recommended Dosage |
Notes |
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Produced fluid |
100 ppm (0.1 kg/m³) |
0.1-0.6 kg/m³ |
Adjust based on field H2S monitoring |
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Gas system |
50-500 ppm |
0.5-2.0 kg/m³ |
Ensure adequate gas-liquid contact |
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High-H2S service |
>500 ppm |
Stoichiometric × 1.5-2.0 |
78 recommended for high efficiency |
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Product
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