Description
Polyvinyl butyral, low viscosity, is a polymeric laboratory chemical supplied for formulation and materials work. It is identified by CAS number 68648-78-2 and EG number 614-691-7, with a molar mass range of 10 000–20 000 g/mol and an approximate density of ~1,1 g/cm³. The low-viscosity designation supports handling and dissolution behaviour suited to coatings, binders, intermediate layers, and related organic polymer applications where moderate chain length is preferred. Density and molar-mass data help laboratories estimate solids contribution and solution properties during recipe design. This grade from manufacturer Carl ROTH is presented with the stated physical and identity parameters so that purchasing and technical documentation remain aligned with the manufacturer description. As a defined low-viscosity polyvinyl butyral, it fits chemical inventories that require clear CAS/EG linkage, pack-size transparency, and traceable safety documentation for routine laboratory and process-development use.
This article belongs on Viscometers, in Density & viscosity measurement.
Key features
- Dynamic viscosity (20 °C): 14-20 mPas
- Non volatile matter: ≥97.5 %
- Assay (Polyvinyl alcohol): 18-21 %
- Assay (Polyvinyl acetate): 1-4 %
- CAS number: 68648-78-2
- Pack sizes: 100 g, 250 g, 500 g
- EG nr.: 614-691-7
- Molar mass: 10 000–20 000 g/mol
- Density: ~1,1 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Polyvinyl butyral, low viscosity, 100 g, plastic
What is this article?
Polyvinyl butyral, low viscosity, 100 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Viscometers, inside Density & viscosity measurement, in Lab instruments.
A capillary viscometer times the flow of a liquid through a tube. A rotational viscometer twists a spindle in the liquid. Both need a stated temperature. Kinematic and dynamic viscosity are different numbers. The capillary size has to put the flow time in the range the method allows.
Density is mass divided by volume. A hydrometer floats at a depth that depends on the density of the liquid. A pycnometer is a vessel of known volume that is weighed full. Viscosity is the resistance to flow. A capillary viscometer times how long a volume takes to fall through a tube. Both measurements need a stated temperature, because liquids change density and viscosity as they warm. The units trace to the BIPM and to NIST.
Which category should I open next?
The category is Density & viscosity measurement. The sub-category is Viscometers. The catalogue is Lab instruments.
Shelves beside this one are Hydrometers and Density meters & pycnometers.
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