Accelerator MS
MS is a Ultra Thiuram Accelerator. It is a fast accelerator often used as a booster for good processing safety in comparison with other thiurams. Unlike thiuram disulphides, the monosulphides do not produce satisfactory cures in complete absence of elemental sulphur. Typical dosage: 0.2 - 0.5 phr.
In polychloroprene rubbers, MS(1.0 phr)used with DPG or DOTG (1.0 phr) and sulphur (0.5 phr) gives a curing system which is a useful alternative to ethylene thiourea (ETU). It offers better processing safety with similar curing activity.
Storage and Handling
- Stable (for a period of one year) under normal storage conditions. No special handling precautions are necessary.
- Normal precautions to avoid contact with skin and eyes should be followed. For eyes, flush with plenty of water and seek medical advice.
Chemical Composition: Tetramethyl thiuram monosulphide
Physical Properties
- Appearance: Lemon yellow powder
- Sp Gr. at 25oC 1.38 (Typical)
| Typical Analysis |
|
Parameter
|
Limits
|
ASTM Test method
|
| Melting Point (oC) |
105 min
|
D 1519
|
| Loss at 100oC for 2 hours (%) |
0.5 max
|
D 4571
|
| Ash Content (%) |
0.5 max
|
D 4574
|
| Solubility |
Insoluble in water. Soluble in chloroform; |
Packaging: 20 Kg. in HDPE lined Paper Bags
|
