| Market
Information
Getahindus supplies accelerated sulphur vulcanized NR latex. Malaysian
Institute of Nuclear Technolology supplies radiation vulcanized
NR latex. MRB is currently able to supply sample of peroxide prevulcanized
NR latex for evaluation.
Nitrosamine Regulation for Baby Teats and Pacifiers
Country |
Nitrosamines,
max (ppb) |
Nitrosatables,
max (ppb) |
Extraction
Procedurea |
| German |
10 totalb |
200 total |
AS |
| Switzerland |
10 totalb |
200 total |
AS |
| Denmark |
5 total |
10 total |
AS |
| Holland |
20 total |
100 total |
AS |
| Australia |
10 eachc |
400 total |
AS |
| USA |
10 eachc |
Not regulated |
DCM |
| Canada |
10 eachc |
Not regulated |
DCM |
| UK |
15 eachd |
Not regulated
|
DCM |
a - AS is artificial saliva,
DCM is dichloromethane.
b - Analytical maxima of 20 ppb and 300 ppb for nitrosamines
and nitrosatables substances respectively.
c - A maximum total nitrosamine level of 60 ppb.
d - A maximum total nitrosamine level of 30 ppb. |
Properties
Typical tensile properties of products prepared from NR latex compounded
with sulphur/ZBED/ZMBT, peroxide prevulcanised and radiation vulcanised
NR latex.
| Properties |
Latex |
S/ZBED/ZMBT
NR
Latex Compound |
Peroxide
Prevulcanised
NR latex |
Radiation
Vulcanised
NR latex |
| M300 (MPa) |
0.8 – 1.3 |
0.8 – 1.4 |
0.8 – 1.3 |
| Tensile strength (MPa) |
24 – 28 |
15 – 20 |
20 - 25 |
| Elongation at break (%) |
800 – 1000 |
800 – 1000 |
800 - 1100 |
|
