ISO Resins
Organic Solvent-Resistant Grade Resin
A Samrat Poly Resins, India grade, SPR 301 OS. Enquire with Samrat FRP Traders for supply, pricing and packaging in Nepal.
Price
PRICE ON REQUEST
Organic Solvent-Resistant Grade Resin pricing varies based on:
- Order Quantity
- Product / Resin Grade
- Current Raw Material Rates
Technical documents
Download Technical Data SheetPDFFull product rangeProduct catalogue · PDF, 16 pagesBrowse the document libraryDocuments issued by: Samrat Poly Resins, India
Isophthalic anti-corrosive grade with resistance to organic solvents and good chemical and heat resistance.
Catalogue codeSPR 301 OS
Isophthalic polyester resin
Resin chemistryIsophthalic Polyester Resins (SPR 301)
- Manufacturer
- Samrat Poly Resins, Doraha, India
- Nepal supplier and importer
- Samrat FRP Traders
- Technical information issued by
- Samrat Poly Resins (2026 catalogue)
- Price, packaging, lead time in Nepal
- Confirmed on enquiry
About this product
SPR 301 OS is an anti-corrosive grade of the isophthalic (SPR 301) family. The supplier describes corrosion resistance against organic solvents with good chemical and heat resistance, and lists FRP linings for organic-solvent storage, sewage pipes and effluent-treatment equipment.
It is supplied non-accelerated and non-thixotropic. For oil-storage-tank lining the family carries SPR 301 OT.
Samrat FRP Traders handles enquiries for this Samrat Poly Resins, India grade in Nepal. Pricing, packaging and availability are confirmed on enquiry.
What this means for buyers
Name the solvent
Organic solvents differ widely. Give the solvent, its concentration and the operating temperature so suitability can be checked for your case.
Effluent and sewage work
The grade is listed for sewage pipes and effluent-treatment equipment as well as solvent storage linings.
Key features
- Isophthalic anti-corrosive polyester resin
- For organic-solvent storage, sewage and effluent service
- Supplied non-accelerated, non-thixotropic
Typical specification
- Appearance
- Clear, light-straw to reddish-amber liquid
- Viscosity
- 200–400 cPs at 25 °C
- Gel time
- 15–35 minutes at 25 °C
- Specific gravity
- 1.03–1.15
- Styrene content
- 35–50% by weight
- Supply condition
- Non-accelerated · non-thixotropic
- Reference cure system
- MEKP 1.5% + Cobalt Octoate 0.4% — added separately during use
Source: Samrat Poly Resins, India — product catalogue, 2026 edition (typical specification)
How to read these values
- These are typical values from the supplier’s product catalogue. They describe the grade; they are not batch guarantees or acceptance limits.
- Chemical-resistance wording describes the grade’s intended service. It is not a universal compatibility chart; the specific chemical, concentration and temperature decide suitability.
- Resin data does not guarantee the performance of a finished FRP component. Confirm suitability with a trial on your own process, reinforcement and cure conditions.
Applications and processes
Uses listed in the supplier’s catalogue.
- FRP linings for organic-solvent storage
- Sewage pipes
- Effluent-treatment equipment
Limitations
- “Organic solvents” covers many chemicals. The grade is a starting point; name the solvent, concentration and temperature before specifying it.
- The values shown are typical catalogue values for the grade, not batch guarantees, acceptance limits or a Technical Data Sheet. Confirm the current data before relying on a figure.
- Resin data does not describe a finished part. Strength, durability, fire behaviour and chemical resistance of a part depend on its design, reinforcement, process, cure and testing.
When to consider a different resin
These grades are made for a different situation. Match them against your own service conditions.
- Oil Storage Tank Grade Resin (SPR 301 OT)FRP lining of oil storage tanks and chemical equipment.
- Vinyl Ester ResinThe chemical service is more aggressive than a polyester lining is specified for.
Comparison table
| Criterion | Organic Solvent-Resistant Grade Resin (SPR 301 OS) | Oil Storage Tank Grade Resin (SPR 301 OT) | Vinyl Ester Resin |
|---|---|---|---|
| Chemistry | Isophthalic unsaturated polyester | Isophthalic unsaturated polyester | Bisphenol-A epoxy vinyl ester |
| Supply condition | Non-accelerated · non-thixotropic | Non-accelerated | Not listed in the TDS summary |
| Viscosity | 200–400 cPs at 25 °C | 300–600 cPs at 25 °C | 350 cPs at 25 °C |
| Gel time | 15–35 minutes at 25 °C | 15–35 minutes at 25 °C | 15–20 minutes at 25 °C |
| Cure system | MEKP 1.5% + Cobalt Octoate 0.4% — added separately during use | MEKP 1.5% + Cobalt Octoate 0.4% — added separately during use | Not listed in the TDS summary |
| Listed uses | FRP linings for organic-solvent storage; Sewage pipes; Effluent-treatment equipment | FRP lining for oil-storage tanks; Chemical-equipment manufacturing | Chemical-service linings and structures; marine composites |
| Choose when | Organic-solvent storage linings, sewage pipes and effluent equipment. | FRP lining of oil storage tanks and chemical equipment. | The chemical service is more aggressive than a polyester lining is specified for. |
Sources: the 2026 product catalogue of Samrat Poly Resins, India for the catalogue grades, and each earlier product’s published Technical Data Sheet summary. Values are typical and were measured under the conditions each source states, so they are a guide to selection, not batch guarantees. Viscosities measured at different spindle speeds or shear conditions are not directly comparable.
Manufacturing and quality context
Samrat Poly Resins manufactures the grade in Doraha, Punjab, India. Its 2026 catalogue presents every grade under its resin chemistry and code and describes a quality inspection laboratory at Doraha. Batch-specific questions, gel-time or viscosity queries and clarification of catalogue values are answered by the manufacturer’s technical team.
The catalogue recommends a trial on the customer’s own process and reinforcement before commercial use: typical values are not a substitute for a trial. Technical and safety data sheets are issued grade by grade: this grade’s Technical Data Sheet is published on this page, and a Safety Data Sheet has not been issued for it here. Ask for the current revision before relying on a document.
Samrat FRP Traders supplies and imports the grade for Nepal and handles enquiries. It does not manufacture, reformulate or certify resins.
Related process guides
These guides are written for another grade. They explain the process; they do not approve this grade for it.
Handling and safety
- Use suitable personal protective equipment and adequate ventilation.
- Store resin, initiators and accelerators separately, in original sealed containers, cool, shaded and away from heat and ignition sources.
- Add the initiator and the accelerator to the resin separately, according to the confirmed process.
- Never mix a concentrated peroxide initiator directly with a cobalt accelerator.
Product details
Applications
Product comparisons
Frequently asked questions
Is it resistant to every organic solvent?
No resin is. The grade is intended for organic-solvent service; the specific solvent, concentration and temperature decide whether it suits your tank or pipe.
What is the difference from SPR 301 OT?
OT is listed for oil-storage-tank lining and chemical equipment; OS for organic-solvent storage, sewage pipes and effluent equipment.
Is a technical or safety data sheet available?
Yes. The supplier’s Technical Data Sheet for this grade is published on this page — Doc. Ref SPR-TDS-OSR, Rev. 01, September 2026, issued by Samrat Poly Resins, India. No Safety Data Sheet has been issued for this grade on this site; ask us and we will request the current one.
Is SPR 301 OS thixotropic?
No. The catalogue lists it as non-accelerated and non-thixotropic.
Where does it sit against vinyl ester?
It is an isophthalic polyester for organic-solvent, sewage and effluent service; vinyl ester is the route for more aggressive chemical service. The service decides.
Knowledge hub
A fuller explanation of this grade’s chemistry, values and limits.
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