The polymer is long enough (average Mn of 1,700-3,200) that the percent of hydrogen can be estimated just using the [–Si(CH3)(H)O–] unit, and that estimated percentage would be 6.71% (4.032/60.127).
81330
Poly(methylhydrosiloxane)
viscosity 15-40 mPa.s (20 °C)
Synonym(s):
Methylhydrogensiloxane polymer, PMHS
Sign In to View Organizational & Contract Pricing.
Select a Size
Change View
| Pack Size | SKU | Availability | Price |
|---|
About This Item
Linear Formula:
(CH3)3SiO[(CH3)HSiO]nSi(CH3)3
CAS Number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
MDL number:
Pricing and availability is not currently available.
form
liquid
Quality Segment
greener alternative product characteristics
Catalysis
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
refractive index
n20/D 1.398
viscosity
15-40 mPa.s(20 °C)
density
1.006 g/mL at 25 °C (lit.)
greener alternative category
SMILES string
[Si](C)(C)(C)C.[Si](O)(C)(C)C.[SiH](O)(C)C
InChI key
KZFYHEHDBPYRMU-UHFFFAOYSA-N
Features and Benefits
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product is an environmentally benign reducing agent and has been enhanced for catalytic efficiency. Click here for more information.
Other Notes
Reducing agent
1 of 1
This Item | |||
|---|---|---|---|
| viscosity 15-40 mPa.s(20 °C) | viscosity 12-45 cSt | viscosity ≤1,700 cP(40 °C)(lit.) | viscosity 200-800 cP(25 °C, Brookfield, spindle #3) (20 rpm)(lit.) |
| refractive index n20/D 1.398 | refractive index n20/D 1.398 | refractive index n20/D 1.4742 | refractive index - |
| form liquid | form liquid | form viscous liquid | form liquid |
| density 1.006 g/mL at 25 °C (lit.) | density 1.006 g/mL at 25 °C (lit.) | density 1.05 g/mL at 25 °C | density 1.04 g/mL at 25 °C (lit.) |
| sustainability Greener Alternative Product | sustainability Greener Alternative Product | sustainability - | sustainability - |
| greener alternative product characteristics Catalysis | greener alternative product characteristics Catalysis | greener alternative product characteristics - | greener alternative product characteristics - |
Still not finding the right product?
Explore all of our products under Poly(methylhydrosiloxane)
Storage Class
10 - Combustible liquids
wgk
WGK 3
flash_point_f
399.2 °F - closed cup
flash_point_c
204 °C - closed cup
ppe
Eyeshields, Gloves
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
C. Chuit et al.
Synthesis, 981-981 (1982)
I. Pri-Bar et al.
The Journal of Organic Chemistry, 51, 734-734 (1986)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 81330-500ML | 04061838148247 |
| 81330-100ML | 04061832996417 |
-
What is the percentage of Hydrogen in Poly(methylhydrosiloxane). Linear Formula: (CH3)3SiO[(CH3)HSiO]nSi(CH3)3 CAS Number: 63148-57-2 MDL number: MFCD00084478 UNSPSC Code: 12162002 PubChem Substance ID: 24887755 NACRES: NA.23
1 answer-
Helpful?
-
-
Is additional curing (cross-linking) chemical needed for product 81330, Poly(methylhydrosiloxane)?
1 answer-
product 81330 does not cross-link on its own at temperatures below 200°C. It requires a curing agent, with the most common options being basic materials such as amines, metal oxides, and metal hydroxides. However, caution is advised during the cross-linking process, as too rapid a cross-link can lead to rapid hydrogen gas evolution, which is highly flammable. This risk can be mitigated by using a lower dosing of the base or a weaker basic material.
Helpful?
-