70900-21-9 Usage
Description
Polydimethylsiloxane hydride terminated is soluble in many organic solvents, such as aromatic hydrocarbon and petroleum hydrocarbons, and so on. it is a kind of widely used organic silicon intermediates, and can be used as organic silicon blocking agent usually. Due to containing reactive Si-H groups in the molecular structure, it can be used in the synthesis of copolymer macromolecule by hydrosilylation. The synthesis of copolymer macromolecule can be made into a series of reactive silicone oil.
Uses
Different sources of media describe the Uses of 70900-21-9 differently. You can refer to the following data:
1. 1. Hydride Terminated Polydimethylsiloxane Can be Used in manufacture of a variety of end group reactive linear modified silicone oil, modification of the reaction, such as plastic resin.
2. The key intermediates of block copolymerization reaction.
3. can be used as chain extension agent for addition liquid silicone rubberm, crosslinking agent for addition liquid silicone rubber.
2. HYDRIDE TERMINATED POLYDIMETHYLSILOXANE is the hydride terminated
form of polydimethylsiloxane, which belongs to a group of polymeric
organosilicon compounds. It can be used as a common surfactant and
an antifoaming agent. It can also be applied as the active silicone
fluid in automotive viscous limited slip differentials and
couplings. Moreover, it is commonly used as a stamp resin in the
field of soft lithography. Finally, it can also be supplemented to
the over-the-counter drugs as an antifoaming agent and carminative.
For example, it is seen in many skin care and beauty products to
prevent water and moisture loss in the skin through forming a
hydrating barrier.
References
https://en.wikipedia.org/wiki/Polydimethylsiloxane
https://www.truthinaging.com/ingredients/polydimethylsiloxane
Check Digit Verification of cas no
The CAS Registry Mumber 70900-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,9,0 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70900-21:
(7*7)+(6*0)+(5*9)+(4*0)+(3*0)+(2*2)+(1*1)=99
99 % 10 = 9
So 70900-21-9 is a valid CAS Registry Number.
