Triazine vs Non-Triazine H₂S Scavenger — How to Choose
Amine-based triazine is the industry workhorse, but non-triazine / non-amine chemistries can be a better fit in specific streams. This brand-free comparison covers chemistry, by-products, pH and solids behaviour so you can choose — and we supply both.
Quick answer: triazine (MEA/MMA) gives cost-effective, high-capacity non-regenerative scavenging with a huge field record. Non-triazine options like EDDM (a formaldehyde-donor) offer neutral pH, no salt precipitation and a different solids profile — better where amine pH shift or triazine solids are a problem.
Side-by-Side
| Factor | Triazine (amine-based) | Non-triazine (e.g. EDDM) |
|---|---|---|
| Backbone chemistry | Amine-triazine ring | Non-amine (e.g. formaldehyde-donor) |
| pH impact | Amine-driven; can shift pH | Typically neutral |
| Solids / salts | Dithiazine solids if over-dosed | No salt precipitation (EDDM) |
| Cost / capacity | High capacity, cost-effective | Niche/premium per duty |
| Best fit | Bulk gas/hydrocarbon scavenging | pH-sensitive / solids-averse streams |
We supply both routes — see the EDDM non-triazine H₂S scavenger product page for the non-triazine option.
Frequently Asked Questions
What is a non-triazine H2S scavenger?
A non-triazine scavenger removes H2S using chemistry other than an amine-triazine ring — for example formaldehyde-donor products such as (ethylenedioxy)dimethanol (EDDM), glyoxal, or metal/oxidiser-based systems. 'Non-amine' specifically means no alkanolamine backbone, which changes pH behaviour, by-products and solids risk.
How does triazine differ from non-triazine chemistries?
Triazine (MEA/MMA) is amine-based and reacts H2S into organic products (with dithiazine as a notable by-product that can form solids if over-dosed). Non-triazine options like EDDM release formaldehyde that reacts with H2S to non-volatile products, often with neutral pH, no salt precipitation and a different solids profile — advantageous in some streams.
When is triazine the better choice?
Triazine remains the workhorse for cost-effective, high-capacity non-regenerative scavenging in gas and hydrocarbon streams, with a large field track record, simple application and wide availability. MEA Triazine 78% and MMA Triazine 40% cover most gas, crude and water duties.
When is a non-triazine scavenger preferable?
Non-triazine/non-amine products can be preferred where you want to avoid amine-related pH shift, salt precipitation or triazine-specific solids, or where a neutral-pH, non-corrosive profile matters. A formaldehyde-donor such as EDDM is a common non-triazine alternative.
Do you supply both triazine and non-triazine scavengers?
Yes. Vasudev Chemo Pharma manufactures MEA Triazine 78%, MMA Triazine 40%, and a non-triazine option — EDDM (ethylenedioxy dimethanol) — so we can recommend the right chemistry for your stream rather than forcing one product.
How do I decide between them?
Match chemistry to the stream: H2S load, phase, temperature, pH sensitivity, solids tolerance and downstream constraints. Triazine for cost-effective bulk gas/hydrocarbon duty; non-triazine (EDDM) where amine pH shift, salts or triazine solids are a problem. We can advise and supply either.
Not sure which chemistry fits?
Vasudev Chemo Pharma supplies MEA Triazine 78%, MMA Triazine 40% and non-triazine EDDM, with selection and dosing guidance, batch COA, and global export from our ISO 9001:2015 certified facility in Gujarat, India.