EDDM Dosage & Use-Level Guide by Application
How much (ethylenedioxy)dimethanol (EDDM, CAS 3586-55-8) to use — by application, with the logic to set and validate your dose. Preservation duties use a percentage of the finished product; H₂S scavenging is set by the sulfide load to be removed.
Quick answer: for in-can preservation and metalworking fluids, dose EDDM to 0.10–0.30% active in the finished product. Set the amount of product from the target active level and your grade's active fraction, then validate microbial efficacy before scale-up. For H₂S scavenging, dose to the sulfide load, not a fixed percentage.
Recommended Use Levels
| Application | Typical in-use level (active) | Notes |
|---|---|---|
| Paints & coatings (in-can) | 0.10 – 0.30% | Add at let-down; headspace protection included |
| Polymer dispersions / adhesives | 0.10 – 0.30% | Higher end for long storage / high risk |
| Metalworking fluids (working fluid) | 0.10 – 0.30% | Concentrate or tank-side; monitor with dip-slides |
| Detergents / polishes / slurries | 0.10 – 0.30% | Adjust to contamination risk and pH |
| H₂S scavenging (oil & gas) | Load-dependent | Set by H₂S concentration & contact time (testing) |
Use levels are typical starting points. Always validate microbial efficacy (or scavenging performance) in your own finished product / system before commercial use.
Dose Calculation
To hit a target in-use active level, work back from the grade active fraction:
Product to add (kg) = (target active % × batch weight) ÷ grade active fraction Example — 0.20% active in a 1000 kg batch using EDDM 90%: = (0.0020 × 1000) ÷ 0.90 ≈ 2.22 kg EDDM 90% product
Related Reading
Frequently Asked Questions
What is the typical EDDM dosage for in-can preservation?
For in-can preservation of water-based paints, coatings, dispersions, adhesives and detergents, EDDM is typically used at 0.10% to 0.30% active in the finished product. The exact level depends on contamination risk, storage time, temperature and formulation pH. Higher-risk or longer-storage products sit toward the upper end.
How much EDDM should I add to metalworking fluid?
Dose EDDM to reach 0.10–0.30% active in the diluted working fluid, adjusted for contamination load, sump size and dilution ratio. It can be built into the concentrate or added tank-side to correct an infected sump. Monitor with dip-slides and top up as fluid is consumed or diluted.
How do I set the right EDDM dose?
Work back from the target in-use active concentration. Dose = (target active % × batch weight) ÷ grade active fraction. For example, to reach 0.20% active in a 1000 kg batch using EDDM 90%: (0.0020 × 1000) ÷ 0.90 ≈ 2.22 kg of product. Always validate microbial efficacy in your finished product before commercial use.
Does the EDDM grade change the dose?
Only the amount of product, not the target active level. A higher grade (e.g. 95%) contains more active per kilogram, so you add slightly less product to hit the same in-use concentration. See the EDDM grades selection guide for the comparison.
Can I overdose EDDM?
Use the minimum level that achieves reliable microbial control — overdosing wastes product and, for formaldehyde-donor chemistry, raises free-formaldehyde levels in the finished product. Where free-formaldehyde limits apply, confirm the level in the finished product and keep to the lowest effective dose.
What dosage is used for H2S scavenging?
H2S scavenger dose is set by the H2S load to be removed and the contact time available, not a fixed percentage — it is determined by field conditions and jar/dynamic testing. Higher-active grades (92–95%) deliver more scavenging capacity per litre injected. Contact us for an application-specific starting dose.
Want a dose tailored to your formulation?
Tell us your product type, pH, storage conditions and contamination challenge, and Vasudev Chemo Pharma will recommend an EDDM (CAS 3586-55-8) starting dose and grade — backed by batch COA and global supply from Gujarat, India.