English name：Dimethylthiotoluenediamine (DMTDA)

Nickname：Ethacure 300

CAS NO：106264-79-3

EINECS NO：403-240-8

UN NO：3082

Transport hazard class (es)：9

Packing group, if applicable：III

Similar products: U.S AIbemarle (Ethacure 300)

1.Physical and chemical properties

Property	Result
Molecular formula	C9H14N2S2
Structural formula
Molecular weight	214.34
Initial boiling point	200°C (1.68 mmHg)
Refractive index	1.659
Melting point/ freezing point	4°C
Flash point	163.4°C
Vapour pressure (kPa)	＜0.0001
Relative density g/cm3 at 25 °C	1.206
Viscosity（20°C)	690
Vapour pressure	mmHg ≤ 0.01 (20°C)

2.Standard value：

Property	Result
Appearance	Light yellow liquid
Dimethylthiotoluenediamine	≥ 95% (Q/370781YXHG002-2015)
Methylthiotoluenediamine	≤ 4.0%
Trimethylthiotoluenediamine	≤ 1.0%
Water content	≤ 0.1%
Amine value (mg KOH/g)	515-535

3.Uses and applications

DMTDA is a new type of polyurethane elastomer curing crosslinking agent, equivalent to Ethancure-300. Mainly includes two kinds of isomers, 2,4-isomer and 2,6-isomer ( The ratio is about 77~80% / 17~20%), compared with MOCA, it is low viscosity liquid under normal temperature, can be used in low temperature.

DMTDA is a low toxicity and environmental protection type liquid diamine chain extender, mainly used for polyurethane elastomer, RIM (reaction injection molding), SPUA (spray polyurea elastomer) and the adhesives. At the same time, it may be used as curing agent for epoxy resin, it has been widely used in polyurethane rollers, medical science, stamping and so on. In addition, it has a wide range of applications in the automobile, construction, mining, metal mining, textile, papermaking, printing. The curing speed of DMTDA is much slower than that of DETDA, which can be mixed with DETDA in different proportions, to adjust the curing speed to meet different requirements.

4.Packaging and transport

Packaging for 1000KG/IBC barrels, 200kg drums or ISOTANK, the special packaging in accordance with the requirements of customers.

5.Storage

Stacked in a cool/ dry/ ventilated place, keep away from heat/ fire, to prevent the direct sunlight, to avoid high temperature, do not sharp object collision damage.