Dehydrated Castor Oil (DCO)
Dehydrated Castor Oil (NDEVOLEO™ DCO) is a drying oil with conjugated double bonds (appearance: clear to slightly hazy, as per specification) in regular commercial supply. It is used as a binder in architectural enamels, quick-set printing inks, and clear varnishes, supplied from our plant at Deodar, Gujarat, with a COA per lot.
Key Technical Facts
| Physical Form | Viscous Liquid |
|---|---|
| Key Specifications | Appearance: Clear to Slightly Hazy Viscous Liquid · Colour, Gardner: 6.0 Max · Acid Value, mg KOH/g: 5.0 Max · Iodine Value, g I₂/100g: 125 – 140 |
| Primary Applications | Architectural Paints & Varnishes · Quick-Set Printing Inks · Marine Spar Varnishes |
Typical specification (indicative)
Specification limits; results reported on the COA for each lot.
| SR NO | TEST PARAMETER | SPECIFICATION LIMIT |
|---|---|---|
| 1 | Appearance | Clear to Slightly Hazy Viscous Liquid |
| 2 | Colour, Gardner | 6.0 Max |
| 3 | Acid Value, mg KOH/g | 5.0 Max |
| 4 | Iodine Value, g I₂/100g | 125 – 140 |
| 5 | Hydroxyl Value, mg KOH/g | 25 Max |
| 6 | Saponification Value, mg KOH/g | 185 – 195 |
| 7 | Specific Gravity at 30°C | 0.930 – 0.940 |
| 8 | Refractive Index at 40°C | 1.473 – 1.478 |
| 9 | Viscosity at 25°C | 1.5 – 2.5 Poise |
| 10 | Moisture & Volatile Matter, % | 0.50 Max |
| 11 | Unsaponifiable Matter, % | 1.0 Max |
| 12 | Conjugated Diene Content, % | 26% Min (Typically 26% – 32% or per customer specification) |
Values are typical for this grade. Results for each lot are reported on its COA; specifications can be agreed per contract.
Applications
Commercial and industrial applications for Dehydrated Castor Oil (DCO) supplied from our Deodar plant.
Architectural Paints & Varnishes
Light-stable conjugated double bonds provide rapid drying, high film hardness, and excellent gloss retention in exterior architectural enamels.
Learn more →Quick-Set Printing Inks
High refractive index and fast oxidative curing make DCO a binder in offset lithographic inks and metal decorating varnishes.
Learn more →Marine Spar Varnishes
Forms chemically resistant, water-impermeable protective films for marine deck coatings, clear industrial primers, and stoving finishes.
Learn more →Packaging & Quality Documentation
Packaging Formats & Dispatch
Packaging options:
Quality Assurance & Lot Documentation
Each lot is tested and supplied with a Certificate of Analysis (COA).
- Batch Certificate of Analysis (COA): Issued per lot verifying specific batch parameters.
- Technical Data Sheet (TDS): Technical parameter guidance and standard limits.
- Safety Data Sheet (SDS): handling and safety information.
- Operational Dispatch: Dispatched directly from our manufacturing plant in Deodar, Gujarat.
Frequently Asked Questions
What catalyst is employed during the dehydration of castor oil?
Heated in vacuum with acid catalysts (such as sulfuric or sulfonic acids) to cleave hydroxyl groups and form conjugated diene bonds.
Which exterior marine spar varnishes and clear alkyd topcoats depend on DCO oil?
Used in exterior marine varnishes, protective industrial enamels, and printing inks where fast tack-free drying is imperative.
What packaging options and documentation are supplied with dehydrated castor oil?
Supplied in 200 kg steel drums, 1,000 L IBC totes (~935–950 kg net), dedicated liquid flexitanks, or bulk ISO tanks. Each lot is supplied with a Certificate of Analysis (COA), Technical Data Sheet (TDS), and Safety Data Sheet (SDS).
Related Castor Products & Derivatives
Other castor oil grades and derivatives from the Nagdev range.
Order commercial volumes or request samples
Connect directly with our commercial desk in Gandhinagar or technical plant team in Deodar, Gujarat.