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Send EmailStandard Vietnamese Rubber, SVR, TSR, SVR CV, SVR 3L, SVR 10, SVR 20, 9006-04-6
STANDARD VIETNAMESE RUBBER (SVR)
Standard Vietnamese Rubber / SVR / TSR / Technically Specified Rubber / SVR CV / SVR 3L / SVR 10 / SVR 20
CAS Number: 9006-04-6
EINECS: 232-674-7
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY
| Parameter | Description |
|---|---|
| Product Name | Standard Vietnamese Rubber (SVR) |
| Other Names | TSR (Technically Specified Rubber), Vietnam Rubber, Natural Rubber (NR) |
| CAS Number | 9006-04-6 |
| EINECS | 232-674-7 |
| Chemical Formula | (C₅H₈)ₙ |
| Molecular Weight | Variable (depends on degree of polymerization) |
| Chemical Class | Natural rubber (polyisoprene) |
| Appearance | White to pale yellow solid block (bale) |
| Odor | Characteristic rubber odor |
| Density | 0.92 - 0.94 g/cm³ |
| Melting Point | 180 - 220°C |
| Water Solubility | Insoluble |
| Organic Solvent Solubility | Soluble in toluene, benzene, chloroform, and other organic solvents |
| Glass Transition Temperature (Tg) | ~ -70°C |
Standard Vietnamese Rubber (SVR) is a technically specified natural rubber (TSR) produced in Vietnam according to international standards (TCVN 3769:2016, based on ISO 2000:2014) . The naming convention follows the TSR system: SVR stands for Standard Vietnamese Rubber, with the country code indicating origin (e.g., SIR for Indonesia, STR for Thailand, SMR for Malaysia) . SVR grades are categorized based on dirt content, ash content, and plasticity properties . The rubber is derived from the latex of the Hevea brasiliensis tree and processed through controlled coagulation, milling, and drying into bale form. SVR is one of the most important natural rubber grades in the global market, widely used in tire manufacturing, automotive parts, footwear, and industrial rubber products .
2. SVR GRADES AND CLASSIFICATION SYSTEM
SVR grades are classified according to dirt content (impurity level), ash content, nitrogen content, volatile matter, plasticity (Po), and Plasticity Retention Index (PRI) .
| Grade | Description | Primary Applications |
|---|---|---|
| SVR CV 50 | Constant Viscosity (50 ± 5) | Bands, adhesives, sports racket surfaces, tire sidewalls |
| SVR CV 60 | Constant Viscosity (60 ± 5); high consistency | Premium tires, automotive seals, high-performance products |
| SVR 3L | Low dirt and ash; high quality; bright color | High-quality tires, automotive parts, light-colored products |
| SVR 10 | Medium quality; general purpose | General tires, conveyor belts, industrial goods |
| SVR 20 | Standard quality; higher dirt and ash | Cost-effective tires, industrial products |
Notes:
-
CV grades have controlled Mooney viscosity, ensuring consistent processing behavior .
-
L in SVR L (Latex grade) indicates the rubber is made from latex, giving it a lighter color and higher purity compared to grades made from cup lump .
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Grades are determined by scientific analysis rather than visual inspection, ensuring quality consistency .
3. TECHNICAL SPECIFICATIONS (TCVN 3769:2016 / ISO 2000:2014)
Detailed Quality Parameters by Grade :
| Parameter | Unit | SVR CV 50 | SVR CV 60 | SVR 3L | SVR 10 | SVR 20 |
|---|---|---|---|---|---|---|
| Dirt Content (max) | % wt | 0.02 | 0.02 | 0.03 | 0.08 | 0.16 |
| Ash Content (max) | % wt | 0.40 | 0.40 | 0.50 | 0.60 | 0.80 |
| Nitrogen Content (max) | % wt | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 |
| Volatile Matter (max) | % wt | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 |
| Initial Plasticity (Po, min) | - | 38 | 35 | 33 | 30 | 30 |
| PRI (min) | - | 60 | 65 | 60 | 50 | 40 |
| Mooney Viscosity (ML 1+4 at 100°C) | MU | 50 ± 5 | 60 ± 5 | - | - | - |
| Lovibond Color (max) | - | 4.0 | 4.0 | 6.0 | - | - |
Explanation of Key Parameters:
-
Dirt Content: Impurities such as sand, bark, and foreign matter. Lower is better for premium applications .
-
Ash Content: Inorganic residue after combustion. Indicates mineral contamination .
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Nitrogen Content: Protein content indicator. Higher nitrogen may affect aging resistance .
-
Volatile Matter: Moisture and volatiles. High levels can cause porosity in finished products .
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Initial Plasticity (Po): Measure of raw rubber's ability to deform. Higher values indicate better processability .
-
PRI (Plasticity Retention Index): Resistance to oxidation and aging. Higher PRI = better durability .
-
Mooney Viscosity: Resistance to flow. CV grades have controlled values for consistency .
4. COMPARISON OF SVR GRADES
| Property | SVR CV 60 | SVR 3L | SVR 10 | SVR 20 |
|---|---|---|---|---|
| Grade Type | Constant Viscosity | High Quality | Medium Quality | Standard Quality |
| Dirt Content | Very Low (0.02%) | Very Low (0.03%) | Low (0.08%) | Medium (0.16%) |
| Ash Content | Very Low (0.40%) | Very Low (0.50%) | Low (0.60%) | Medium (0.80%) |
| PRI | Excellent (65) | Good (60) | Good (50) | Moderate (40) |
| Color | Light | Bright | Variable | Darker |
| Viscosity Control | Yes (60 ± 5) | No | No | No |
| Primary Applications | Premium tires, seals, high-performance products | High-quality tires, automotive parts | General tires, conveyor belts, industrial goods | Cost-effective tires, industrial products |
5. CHEMICAL PROPERTIES AND REACTIONS
Natural rubber (polyisoprene) has a hydrocarbon backbone with unsaturated double bonds, making it susceptible to oxidation, vulcanization, and addition reactions.
Vulcanization: Sulfur cross-linking with accelerators to improve strength, elasticity, and heat resistance.
Oxidation: Reacts with oxygen, especially when heated, causing chain scission and hardening. PRI measures resistance to this.
Ozone Resistance: SVR has poor resistance to ozone; requires antioxidants/antiozonants in formulations.
Addition Reactions: The double bonds can undergo halogenation, hydrogenation, and epoxidation.
6. PHYSICAL PROPERTIES
| Property | Value |
|---|---|
| Density | 0.92 - 0.94 g/cm³ |
| Glass Transition Temperature | ~ -70°C |
| Mooney Viscosity (ML 1+4 at 100°C) | 50-65 MU (grade-dependent) |
| Color | White to pale yellow (higher grades are lighter) |
| Odor | Characteristic rubber odor |
7. APPLICATIONS AND INDUSTRIAL USES
7.1. Tire Industry (Largest Application)
| Application | Recommended Grade |
|---|---|
| Passenger Car Tires - Tread | SVR 3L, SVR CV 60 |
| Truck and Bus Tires | SVR 10 |
| OTR (Mining/Construction) Tires | SVR 20 |
| Tire Sidewalls | SVR CV 50, CV 60 |
| Retreading | SVR 3L, SVR 10 |
7.2. Automotive and Industrial Rubber Products
| Application | Recommended Grade |
|---|---|
| Automotive Seals and Gaskets | SVR 3L, SVR CV 60 |
| Hoses and Tubing | SVR 10, SVR 20 |
| Conveyor Belts | SVR 10 |
| V-Belts and Drive Belts | SVR CV grades |
| Anti-Vibration Mounts | SVR CV 50, CV 60 |
| Rubber Rollers | SVR 3L |
7.3. Footwear and Consumer Goods
| Application | Recommended Grade |
|---|---|
| Shoe Soles | SVR 10 |
| Athletic Footwear | SVR 3L |
| Rubber Bands | SVR CV 50, CV 60 |
| Adhesive Tapes | SVR CV grades |
| Sports Racket Surfaces | SVR CV grades |
8. PACKAGING AND SHIPPING
| Packaging Option | Details |
|---|---|
| Bale Weight | 33.33 kg or 35 kg |
| Bale Dimensions | Standard block rubber shape |
| Pallet Configuration | 36 bales/pallet = 1.26 MT |
| Pallet Type | Shrink-wrapped wooden, disposable plastic, or metal |
| Container Capacity (20-ft) | 16 pallets = 20.16 MT |
| Container Type | Standard 20-ft container |
9. STORAGE AND HANDLING
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area; away from direct sunlight |
| Recommended Temperature | Below 30°C |
| Humidity | Avoid high humidity to prevent mold growth |
| Shelf Life | 12-24 months under proper storage conditions |
| Handling | Avoid contamination with oils, solvents, and dirt |
| Protection | Keep bales covered and protected from moisture and dust |
| Stacking | Maximum 4-5 pallets high for stable storage |
10. SAFETY AND HEALTH INFORMATION
| Parameter | Information |
|---|---|
| Toxicity | Non-toxic |
| Skin Irritation | Non-irritant |
| Eye Irritation | Mild irritant (dust) |
| Inhalation | May cause respiratory irritation (dust) |
| Flammability | Combustible (can burn) |
| Fire Extinguishing Media | Water spray, foam, CO₂, dry chemical powder |
| Special Hazards | Burning produces toxic fumes (CO, CO₂, SO₂) |
11. FIRST AID MEASURES
| Exposure Route | Action |
|---|---|
| Inhalation | Move person to fresh air. If irritation persists, seek medical attention. |
| Skin Contact | Wash with soap and water. Remove contaminated clothing. |
| Eye Contact | Rinse with plenty of water for at least 15 minutes. Seek medical attention if irritation persists. |
| Ingestion | Rinse mouth. Do NOT induce vomiting. Seek medical attention if large amounts are swallowed. |
12. REGULATORY INFORMATION
| Region | Status |
|---|---|
| EU | REACH registered |
| Turkey (KKDİK) | Mandatory compliance; requires registration |
| USA (TSCA) | Listed |
| Canada (DSL) | Listed |
| Australia (AICS) | Listed |
| Japan (ENCS) | Listed |
| Korea (KECL) | Listed |
| China (IECSC) | Listed |
Regulatory Status:
| Status | Information |
|---|---|
| HS Code | 40012200 (Technically Specified Natural Rubber) |
| CAS Number | 9006-04-6 |
| EINECS | 232-674-7 |
| IARC Classification | Not classified |
| WGK Germany | 1 (slight hazard to water) |
13. OTHER NAMES AND DATABASE IDENTIFIERS
| Category | Names / Identifiers |
|---|---|
| Product Names | Standard Vietnamese Rubber, SVR, Vietnam Rubber, Natural Rubber |
| Grade Names | SVR CV 50, SVR CV 60, SVR 3L, SVR 10, SVR 20 |
| Common Names | TSR (Technically Specified Rubber), NR, Natural Rubber |
| Country Equivalents | SVR (Vietnam), STR (Thailand), SIR (Indonesia), SMR (Malaysia) |
Database Identifiers:
| Database | Identifier |
|---|---|
| CAS | 9006-04-6 |
| EINECS | 232-674-7 |
| HS Code | 40012200 |
14. COMPARISON WITH OTHER NATURAL RUBBER GRADES
| Grade | Origin | Characteristics | Equivalence |
|---|---|---|---|
| SVR 3L | Vietnam | Low dirt, high quality, bright color | Comparable to STR 5L / RSS 3 |
| SVR 10 | Vietnam | Medium quality | Comparable to STR 10 / SIR 10 |
| SVR 20 | Vietnam | Standard quality | Comparable to STR 20 / SIR 20 |
| SVR CV 60 | Vietnam | Constant viscosity | Comparable to STR CV 60 / SIR CV 60 |
| RSS 3 | Thailand | Ribbed smoked sheet | High quality, visual grade |
| STR 20 | Thailand | Standard TSR | Comparable to SVR 20 |
TSR Naming Convention: The letters indicate country of origin (SIR = Indonesia, STR = Thailand, SMR = Malaysia, SVR = Vietnam), and the number/letters indicate the grade .
15. HS CODE AND CUSTOMS INFORMATION
| Grade Material | HS Code |
|---|---|
| Cup Lump Grade (SVR 10, 20) | 4001.2210 / 4001.2220 |
| Latex Grade (SVR L, CV) | 4001.2230 / 4001.2240 |
16. QUALITY CONTROL PARAMETERS
| Parameter | Test Method | Significance |
|---|---|---|
| Dirt Content | Sieve Analysis | Purity level; impacts surface finish and processing |
| Ash Content | Ignition | Inorganic contamination |
| Nitrogen Content | Kjeldahl Method | Protein content; affects aging |
| Volatile Matter | Oven Drying | Moisture content; affects processability |
| Initial Plasticity (Po) | Plastimeter | Raw rubber processability |
| PRI | Accelerated Aging | Oxidative stability; service life indicator |
| Mooney Viscosity | Mooney Viscometer | Processing consistency (CV grades) |
| Lovibond Color | Colorimeter | Color quality (higher grades) |
17. ADVANTAGES OF SVR
| Advantage | Description |
|---|---|
| Technically Specified | Consistent quality determined by scientific analysis |
| Consistent Quality | Standardized specifications ensure batch-to-batch consistency |
| Wide Range of Grades | Grades from premium (SVR 3L) to cost-effective (SVR 20) |
| Good Mechanical Properties | High tensile strength, elasticity, and abrasion resistance |
| Easy Processing | Stable characteristics for compounding and blending |
| Cost-Effective | Competitive pricing, especially for SVR 10 and SVR 20 |
18. LIMITATIONS
| Limitation | Description |
|---|---|
| Poor Ozone Resistance | Requires antioxidants/antiozonants in formulations |
| Oxidative Aging | Susceptible to oxidation at high temperatures; PRI indicates resistance |
| Moisture Sensitivity | Requires proper storage to prevent mold growth |
| Color Variation | Lower grades have darker color; affects light-colored products |
19. INDUSTRY SUITABILITY TABLE
| Industry | Applications | Recommended Grades | Suitability |
|---|---|---|---|
| Tire Industry | Passenger, truck, OTR tires | SVR 3L, SVR 10, SVR 20, SVR CV 60 | High |
| Automotive Parts | Seals, hoses, mounts, belts | SVR 3L, SVR CV 60 | High |
| Footwear | Shoe soles, sports shoes | SVR 10, SVR 3L | High |
| Industrial Products | Conveyor belts, rollers | SVR 10, SVR 20 | High |
| Adhesives and Tapes | Rubber bands, PSA tapes | SVR CV 50, CV 60 | High |
| Sports Equipment | Racket surfaces | SVR CV 50, CV 60 | High |
20. SUMMARY AND CRITICAL WARNINGS
SUMMARY:
Standard Vietnamese Rubber (SVR) is a technically specified natural rubber produced in Vietnam according to international standards (TCVN 3769:2016 / ISO 2000:2014). The main grades are SVR CV 50, SVR CV 60 (constant viscosity), SVR 3L (high quality), SVR 10 (medium quality), and SVR 20 (standard quality). Specifications vary by grade: dirt content (0.02-0.16%), ash content (0.40-0.80%), nitrogen content (≤0.60%), volatile matter (≤0.80%), Po (30-38), PRI (40-65), and Mooney viscosity (50-65 MU for CV grades) . SVR is used in tires, automotive parts, footwear, conveyor belts, adhesives, and sports equipment . Packaging: 33.33 kg or 35 kg bales, 36 bales/pallet (1.26 MT), 16 pallets/20-ft container (20.16 MT) . SVR is non-toxic, combustible, and requires storage in cool, dry conditions. HS Code: 40012200 .
Key Properties:
| Property | Value |
|---|---|
| Appearance | White to pale yellow solid block |
| CAS Number | 9006-04-6 |
| Density | 0.92 - 0.94 g/cm³ |
| Primary Grades | SVR CV 50, SVR CV 60, SVR 3L, SVR 10, SVR 20 |
| Primary Use | Tires, automotive parts, industrial products |
Major Application Areas:
| Industry | Applications |
|---|---|
| Tire Industry | Passenger, truck, OTR tires |
| Automotive Parts | Seals, hoses, mounts, belts |
| Footwear | Shoe soles |
| Industrial Products | Conveyor belts, rollers |
| Adhesives | Rubber bands, tape adhesives |
Key Safety Points:
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NON-TOXIC: Generally safe for handling
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COMBUSTIBLE: Can burn; keep away from ignition sources
-
STORAGE: Store in cool, dry, well-ventilated area; avoid direct sunlight and high humidity
-
PPE RECOMMENDED: Dust mask, safety goggles, protective gloves (for handling)
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PROTECT: Keep away from oils, solvents, and contaminants
CRITICAL WARNINGS:
-
SVR grades are classified by technical specifications rather than visual inspection, ensuring consistent quality .
-
SVR CV 60 has controlled Mooney viscosity (60 ± 5) for consistent processing .
-
SVR 3L is the highest quality grade with very low dirt and ash content, used in premium applications .
-
SVR 10 is a cost-effective mid-grade rubber widely used in tire manufacturing and industrial goods .
-
PRI indicates aging resistance; higher values (65 for CV 60) indicate better durability .
-
Store away from direct sunlight and heat sources to prevent degradation and maintain quality.
-
Contamination with oils or solvents can significantly affect rubber performance.
Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific application and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.
