Grade & Quality
Ethanol 99.9% vs SDS 95%: What Industrial Buyers Should Know
Procurement teams often receive quotations for both Ethanol 99.9% and Special Denatured Spirit (SDS) 95% for the same requirement. They are not interchangeable. This guide sets out the practical differences so you can match the grade to the application.
Krivaana Editorial Team · Updated 8 October 2026 · 3 min read
What is the difference between Ethanol 99.9% and SDS 95%?
Ethanol 99.9% is a high-purity, low-water ethanol, typically supplied undenatured unless a denatured version is specified. Special Denatured Spirit (SDS) 95% is ethanol at about 95% strength to which a specified denaturant has been added, making it unfit for consumption and suited to permitted industrial and cosmetic uses.
What Ethanol 99.9% means
"99.9%" describes the ethanol content of the material — very little water remains. Ethanol 99.9% is used where low water content matters, such as certain solvent, extraction, formulation and laboratory uses. Not every 99.9% product has the same regulatory status: a denatured ethanol 99.9% and an undenatured 99.9% are different products for compliance purposes.
What SDS means
In ethanol trade, SDS means Special Denatured Spirit. Special Denatured Spirit (SDS) 95% contains a denaturant specified for the permitted use. SDS composition is not universally identical — the denaturant and its proportion can vary according to the offered specification and applicable requirements.
Do not confuse Special Denatured Spirit (SDS) with SDS meaning Safety Data Sheet. A current Safety Data Sheet should be available for the supplied product and provided according to the grade, requirement and applicable documentation.
Side-by-side comparison
| Factor | Ethanol 99.9% | Special Denatured Spirit (SDS) 95% |
|---|---|---|
| Purity | About 99.9% ethanol, very low water | About 95% ethanol, remainder mainly water plus denaturant |
| Denatured status | Usually undenatured unless a denatured version is specified | Denatured with a specified denaturant |
| Typical applications | Low-water solvent uses, formulation, extraction, laboratory | Cosmetics, fragrance, sanitizer, cleaning and industrial solvent uses where permitted |
| Documentation | Batch COA, Safety Data Sheet, invoice | Batch COA, denaturant details per specification, Safety Data Sheet, invoice |
| Selection considerations | Water sensitivity, regulatory position for undenatured alcohol | Denaturant compatibility with formulation and permitted use |
Values are indicative descriptions, not specification limits. The applicable limits depend on the grade, customer specification and supplied batch documentation.
Typical industrial application differences
Fragrance and personal care manufacturers often evaluate denatured grades, while some water-sensitive solvent and process applications require high-purity ethanol. Our industries overview shows the grades usually discussed for each sector, and the Perfume & Fragrance page covers fragrance-specific considerations.
Why price alone should not determine grade
A lower-cost grade that introduces water, an incompatible denaturant or the wrong compliance status can cost more through rejected batches or reformulation. Start from the approved specification, then compare quotations for the grades that meet it. See what determines bulk ethanol price.
Buyer specification, COA and Safety Data Sheet
Share your specification with the supplier and compare it with the batch COA before dispatch. The Safety Data Sheet covers hazards, handling and storage. Quality & Documentation explains what Krivaana provides, and our COA reading guide explains the fields.
Transport and commercial considerations
Both grades are flammable liquids and move under applicable transport requirements. Commercial terms can differ by grade because of source, denaturation, packaging and documentation. Applicable requirements should be confirmed for the specific grade, use and destination.
Questions procurement teams should ask
- Is the offered material denatured? If so, with what denaturant and in what proportion?
- Does the batch COA cover the parameters in our specification?
- Is the grade permitted for our intended use and destination?
- For repeat procurement, ask how subsequent lots will be evaluated against the buyer's approved specification or reference requirements.
- What packaging and dispatch format is available for our volume?
This guide is general procurement information from Krivaana Industries LLP, an ethanol supplier. It is not a regulatory, laboratory or legal opinion. Applicable requirements should be confirmed for the specific grade, use and destination.
