CAS No 80-05-7 BPA Bisphenol a

Product Description

   

Product Description

       
 CAS No 80-05-7 BPA bisphenol A

Bisphenol A (BPA) is a chemical compound primarily used in the manufacturing of various plastics. It is a colourless solid which is soluble in most common organic solvents, but has almost no solubility in water. BPA is produced on an industrial scale by the condensation of phenol and another chemicial raw material, and has a global production scale which is expected to reach 10 million tonnes in 2022.
BPA's largest single application is as a co-monomer in the production of polycarbonates, which accounts for 65-70% of all BPA production. The manufacturing of epoxy resins and vinyl ester resinsaccount for 25-30% of BPA use. The remaining 5% is used as a major component of several high-performance plastics , and as a minor additive in PVC, polyurethane, thermal paper, and several other materials. It is not a plasticizer, although it is often wrongly labelled as such.
 

Product Application.

 

Bisphenol A Application

 

Polycarbonates
Between about 65-70% of all bisphenol A is used to make polycarbonate plastics, which can consists of nearly 90% BPA by mass. Polymerisation is achieved by a reaction with phosgene, conducted under biphasic conditions; the hydrochloric acid is scavenged with aqueous base. This process converts the individual molecules of BPA into large polymer chains, effectively trapping them.

Epoxy and vinyl ester resins
About 25-30% of all BPA is used in the manufacture of epoxy resins and vinyl ester resins. For epoxy resin, it is first converted to its digl ycide e ther (usually abbreviated BADGE or DGEBA). This is achieved by a reaction with epichlorohydrin under basic conditions.

Some of this is further reacted with methacrylic acid to form bis-GMA, which is used to make vinyl ester resins.

 

Minor uses
The remaining 5% of BPA is used in a wide range of applications, many of which involve plastic.BPA is a major component of several high-performance plastics, the production of these is low compared to other plastics but still equals several thousand tons a year. Comparatively minor amounts of BPA are also used as additives or modifiers in some commodity plastics. These materials are much more common but their BPA content will be low.

 

Plastics
As a major component

* Polycyanurates can be produced from BPA by way of its cyanate ester.
* Polyetherimides can be produced from BPA. They are used in medical devices and other high performance instrumentation.
* Polybenzoxazines may be produced from a number of biphenols, including BPA.
* Polysulfones can be produced from BPA and bis(4-chlorophenyl) sulfone forming poly(bisphenol-A sulfone) (PSF). It is used as a high performance alternative to polycarbonate.
* Bisphenol-A formaldehyde resins are a subset of phenol formaldehyde resins. They are used in the production of high-pressure laminates

 

As a minor component

* Polyurethane foams, and particularly memory foams, sometimes use the diacrylate and dimethacrylate derivatives of ethoxylated BPA as chain extenders.
* PVC can contain BPA and its derivatives through multiple routes. BPA is sometimes used as an antioxidant in phthalates,which are extensively used as plasticizers for PVC. BPA has also been used as an antioxidant to protect sensitive PVC heat stabilizers. Historically between 5 and 10% by weight of BPA was included in barium cadmium types, although these have largely been phased-out due health concerns surrounding the cadmium. BPA diglycidyl ether (BADGE) is used as an acid scavenger,
particularly in PVC dispersions, such as organosols or plastisols, which are used as coatings for the inside of food cans, as well as embossed clothes designs produced using heat transfer vinyl or screen printing machines.
* Bromination of BPA froms tetrabromobisphenol A (TBBPA), which is used as a flame retardant in plastics. TBBPA is mainly used as a reactive component of polymers, meaning that it is incorporated into the polymer backbone. It is used to prepare fire-resistant polycarbonates by replacing some bisphenol A. A lower grade of TBBPA is used to prepare epoxy resins, used in printed circuit boards. Its use is diminishing due to restrictions on brominated flame retardants.

 

Other applications
* BPA is used as an antioxidant in several fields, particularly in brake fluids.
* BPA is used as a developing agent in thermal paper (shop receipts). Recycled paper products can also contain BPA,although this can depend strongly on how it is recycled. Deinking can remove 95% of BPA,with the pulp produced used to make newsprint, toilet paper and facial tissues. If deinking is not performed then the BPA remains in the fibers, paper recycled this way is usually made into corrugated fiberboard.
* Ethoxylated BPA finds minor use as a 'levelling agent' in tin electroplating.

Specification:

 

Properties	Limits	Results	Test Methods
Appearance	White granular or flake, without mechanical	White granular, no mechanical impurities	Q/SSTPC(F)13037-2020
BPA,ω/%	≥ 99.9	99.93	Q/SSTPC(F)11029-2020
Phenol,w/%	≤ 0.005	0.0007	Q/SSTPC(F)11029-2020
2,4-isomer,w/%	≤ 0.050	0.013	Q/SSTPC(F)11029-2020
Crystallization point,ºC	≥ 156.0	156.7	GB/T 7533-1993
Melting color,Hazen	≤15	>15≤25	GB/T 3143-1982
Solution color,Hazen	≤ 10	2	GB/T 3143-1982
Water,ω/%	≤ 0.08	0.03	Q/SSTPC(F)13003-2020
---	---	---	---
Sampling Description
Conclusion	Inspector
CONFORMITY	Shen Jian Rong
Note: This product complies with Q / 370522LWY 023-2019 standard (specification)

 

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Packaging & Shipping

We have various of packages for different products and we are always pleased to satisfy customers' request.

Packaging:
750kg*20 jumbo bags,15ton/20'FCL;
750kg*35bags,26.25ton/FCL.

Shipping:
Promote shipping usually 7--14 days after receiving TT deposit or LC Original .



 

Company Profile

 

NearChem, a group company with a state-owned background in the chemical industry for over 20years, serves as a nominated supplier for the top 50 chemical enterprises.

With a registered capital of 30 million yuan, NearChem was founded in 2011 and has grown rapidlywith total assets of 140 million yuan and 300 employees. With the stable financial support of thegroup company, NearChem integrates rich chemical resources along
with individually customizedservices for all global clients.
Over the past 20 years, we have served 100+ countries and regions, 500+clients, 1000+partnershome and abroad.

Near Chemical, Near U, Warm the world.
 

Our Advantages

 

10 Years Experiences
Our products have been promoted to all over Europe,North&South America, Middle-east, Asia and pacific area as well as Africa,we have established long term cooperation with our clients.

Quality service
Adhering to the principle of "quality first,service the best" Near Chem insists on providing high-quality chemicals based on a complete Quality Assurance System. Meanwhile,we use SOP system to guarantee our whole logistics.  Near Chem has built a mutual trust under honesty and integrity principles with customers all around the world.And will keep promoting our commitment to better a nearer Chem to the world.  
 
24 hour service
24 hours quick and clear respond to our customers all around the world. Professional and individual after sales service to assure the Customer satisfaction.
 

FAQ

 

1 Q:Are you manufacturer?
A: As an integrated enterprise, we have our own production lines on MC and Aniline oil, meanwhile we are one of the experienced distributors for other chemicals such as PVA , Propylene Glycol, Ethylene Glycol,, Polyol etc. We have competitive price benefited by ready stock and good relations with some leading chemical manufacturers.

2 Q: How can you guarantee your quality?
A: Our factory owns mature production line under EPR quality system. We can guarantee the stability and qualification of the raw materials. And we also have SOP loading system to ensure the safety and timely transportation.

3 Q: Can I get some samples?
  A:  Yes, we can supply samples free of charge, the courier shipping cost will be prepaid by customers.

4 Q: How to confirm the Product Quality before placing orders?
  A :  You can get free samples from us or taking our previous SGS Reports as reference or arrange SGS before loading.

5 Q: What is your MOQ?
A: Our MOQ is 20'FCL for each product.

6 Q: What kind of package do you have?
A: We have many different packages to meet needs of our customers,like Iron drums,plastic drums, IBC drums, Flexitank, ISO TANK and bags etc.


7 Q :Which kind of payment terms do you accept?
A: TT, LC at sight/ LC 90/120days payment terms are acceptable. 

8 Q:Can you give me a discount price?
A: Yes. It depends on your order qty.

9 Q: How about your delivery? How long is your delivery time?
A: Prompt and reliable delivery by professional shipping lines.
Generally it takes 14 days after deposit or original LC.