Tanyun Logo


Headquarters: No. 75,Xinhu Street,Xishi District, Yingkou,Liaoning, China 115004

Shenzhen Office: Floor 15A,No. 111 Taizi Road, Shekou, Nanshan District, Shenzhen, Guangdong, China 518100

PVA | Polyvinyl Acetal (II)

Executive standard: Q/TYG.J001-2014
CAS RN: 63148-65-2

Executive standard: Q/TYG.J001-2014

CAS RN: 63148-65-2

1. Physical and chemical properties:

1.1 Brief introduction:Polyvinyl acetal (II) iswhite solid particle, non-toxic, non-harmful. It has many good properties, such as, good anti-weather ability, high transparency, good insulation, good film-formation ability, anti-impact at low temperature, cold weather resistance, water proofing and aging resistance.

1.2 Structure formula:


2. Technical indexes:

Item Index
Type TB-05T TB-17T TB-26T
Particle size (through 20 mesh), % (m/m) 100 100 100
Volatile matter, % (m/m) ≤3.0 ≤3.0 ≤3.0
Free acid (in HCl), % (m/m) ≤0.05 ≤0.05 ≤0.05
Vinyl alcohol acetal, % (m/m) ≥78.0 ≥78.0 ≥78.0
Hydroxyl value, %m/m 11-17 11-17 11-17
Viscosity (20℃±0.2℃,10%, 5% toluene-ethanol solution), mPa.s 10-3010% 80-1205% 210-2705%
Transparency, % 430nm ≥80 ≥80 ≥80
660nm ≥90 ≥90 ≥90
Jelly, % (m/m) -- -- --
Appearance White / slight yellow powder or particle

3. Application: Polyvinyl acetal (II) has good thermostability and high transparency. It can be applied in heat-resistant coating, adhesive of copper clad laminate, ink, dyestuff, binder of non-woven fabrics and etc.

4. Package: Woven bag with inner plastic bag, 12.5 kg net each.

5. Storage: Stored at cool and ventilate place. Sealed preservation. Shelf life: 12 months. It is still available if he retest results of the properties are qualified after expired date.

6. Transportation: Avoid rain, moist and sun-baked. Don't mix with strong oxidizer.


We are able to develop custom-made products according to the clients'requests

We have 5 R&D bases (Shanghai, Hangzhou, Suzhou, Yingkou, Shenzhen), hundreds of synthesis leading experts and PhDs in chemistry.

We own experienced R&D capability and rich experience in production, and provides you with a variety of organic chemicals, medical intermediates research, development, production, etc. on behalf of a range of high quality customized service.

As of 2015, We have developed over 60 kinds of custom chemicals for the customers, and 3 kind products, such as copper chromite dehydrogenation catalyst, have already consigned a usage in batch with customer sign-off. 2 invention patents have been applied. 6 kinds of customized products, such as efficient curing agent, have been applied in pilot trials and pilot production by customers.

More than 10 kinds of chemicals have been in R&D, such as nano-waterproof materials, oil additives and fine chemical intermediates.

TANYUN produces boron, ferrocene, solid propellant and more series of chemicals, which cannot be all listed on the website. For more information about products and MSDS, please contact ty@tanyunchem.com. You can also consult related product customization and latest research and development information.