About Rubber

Vietnam ranks number 03 after Malaysia and Thailand in producing rubber. However, with the expansion of area and facilities, not only in Vietnam but in Laos and Cambodia also, this position will be quickly changed. Highly appreciate the returns from rubber industry, Vietnam is strongly investing in farming and producing fields with significant budget and modern technologies.

More producers are applying for ISO and that makes Vietnam rubber more popular and acceptable to the buyers. Geographical, cost advantages and economic of scale will bring Vietnam rubber industry better access to booming markets as India, Chinese and open world market as well. ACC undertakes an active part to realize those advantages.

All natural rubber comes as liquid latex from the Hevea Brasiliensis tree. Differing production methods also impart specific characteristics to the raw rubber. Therefore, natural rubber is classified into numerous grades, depending on production methods and technical properties

Vietnam natural rubber in block form (crumb) is classified into 6 grades: SVR 3L, SVR CV60, SVR CV50, SVR5, SVR 10, SVR 20.

SVR (TCVN 3769:2004)
Parameter *         Grade
1. Dirt content, % wt. Max 0.02 0.02 0.02 0.03 0.05 0.08 0.16
2. Volatile matter, % wt.Max 0.8 0.8 0.8 0.8 0.8 0.8 0.8
3. Ash content, % wt. Max 0.4 0.4 0.4 0.5 0.6 0.6 0.8
4. Nitrogen content, % wt. Max 0.6 0.6 0.6 0.6 0.6 0.6 0.6
5. Initial plasticity (PO). Min 35 35 30 30 30
6. Plasticity retention index (PRI). Min 60 60 60 60 60 50 40
7. Colour index. Max 4 6
8. Mooney viscosity ML (1’ + 4’) 100oC 60 ± 5 50 ± 5
9. Cure ** R R R R
10. Color coding strip Orange Transparent White opaque
11. Color coding marker Black Light green Brown Red
* Testing for compliance shall follow ISO test methods
** Cure information is provided in the form of rheograph (R)

This scheme requires standardized tests to be performed on each grade of rubber as well as a standardized packing of either 33 1/3 Kilo or 35 kilo bales wrapped in thin, dispersible polyethylene or thick, strippable polyethylene. SVR rubber is usually packed with 36 bales on a crated or shrink-wrapped standard size pallet. Crate size is 1200 or 1260 Kilos

Vietnam natural rubber in latex form is classified into 02 grades are LA and HA.

LATEX (TCVN 6314 : 1997)
Properties Limits
   HA  LA
Total solids content, (TSC), % wt. Min            61.50            61.50
Dry Rubber Content (DRC), % wt. Min            60.00            60.00
Non – rubber content % wt. Max (TSC minus DRC)              2.00              2.00
Total Alkalinity (NH3) % wt
      Min              0.60  –
      Max  –              0.29
Mechanical Stability Time (MST) sec. Min               650               650
Coagulum content % wt of TSC. Max              0.05              0.05
Copper content, mg/kg, % of TSC. Max              8.00              8.00
Manganese content, mg/kg, % of TSC. Max              8.00              8.00
Sludge content, % wt of TSC. Max              0.10              0.10
Volatile fatty acid (VFA). Max              0.20              0.20
KOH number. Max              1.00              1.00

Natural Rubber Latex packed in  Flexi Bag up to 21 tons in 20ft container or  Steel Drum 205 kgs /200 kgs,  up to 16.4 MTS in 20 ft container

This rubber page is provided to assist you with useful information on the basics of the grades of rubber. We can supply you with additional information such as supply, demand, and supply and price trends … etc on request.

ACC does regular trade in all the grades of rubber listed above. We would like to become a supplier to your company. Please contact us for more information

Material Safety Data Sheet
Natural Rubber is not a hazardous material. Download our Material Safety Data Sheet (MSDS) for more information. The file is provided in Adobe PDF format for easy viewing and printing.

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