Evaluation of Alternatives for Compounds under Risk Assessment in the EU, Bisphenol A

3 Search in the Danish Product Register

The Danish Product Register (DPR) is registering hazardous products for professional use according to the Danish legislation. This means that any person starting professional manufacture or importation of products, which may constitute a danger to or in any other way adversely affect safety or health, prior to commencement of these activities must submit notification to the DPR. The notification of a product includes among other things:

  • Information on the composition of the product.
  • Information on the use (product type and trade category)
  • Information on volume manufactured/imported.

A manufacture or importer who has submitted a notification must inform the DPR about any changes in the information submitted. However, experience shows that some manufacturers and importers fail to inform the DPR about such changes.

In the following sections, bisphenol A substances (BPA-substances) are defined by derivatives of bisphenol A (BPA) or polymers containing BPA as monomer.

The purpose of the search in the DPR was:

  1. To provide an overview of product types containing BPA-substances.
  2. To provide an overview of the trades in which the products containing BPA-substances are used.
  3. To provide information on the function of BPA-substances in products.
  4. To provide information on alternatives to BPA-substances related to the focus areas of this project.

The overview of product types containing BPA-substances and trades using the products was mainly used to verify the chosen focus areas or to state new areas of attention in respect to this project. The information describing the function of BPA-substances in the products was used to identify alternatives to certain applications related to the selected focus areas.

The strategy of the DPR search is illustrated in Figure 3.1. The registered BPA-based substances were identified and subsequently grouped in three groups. The function of the substances in the products was mapped out for each group. Furthermore, product types containing and industrial sector using BPA-substances were mapped out for each of the three groups. Potential alternatives to BPA-substances were identified in selected product types and trade categories relevant to the focus areas of this project.

Figure 3.1 The strategy of the D P R search

Figure 3.1 The strategy of the D P R search

The results of the DPR search related to the strategy are described in the following sections.

3.1 Identification of bisphenol A substances

The identification of BPA-substances registered in the DPR was based on several searches with different inputs. The CAS No. 80-05-7 for BPA and synonyms/names of BPA were used as search inputs. A list with BPA-substances was generated. The list is divided into three groups:

Group 1: Epoxy polymers
Group 2: Other polymers with bisphenol A as monomer
Group 3: Derivatives of bisphenol A (not polymers)

Group 1 is a list of 347 substances. In this search, epoxy polymers are characterized as polymers containing monomers such as bisphenol A and epichlorhydrin or bisphenol A diglycidylether (BADGE) as a minimum. In addition, the polymers may contain other monomers. It has not been possible to determine the molecular weight or the degree of free epoxy-groups of the polymers from the search. Examples of polymers in group 1 are stated below:

  • Bisphenol A/epichlorhydrin/methacrylic acid polymer
  • Bisphenol A/epichlorhydrin/formaldehyde polymer
  • Bisglycidyl ether bisphenol A resin
  • Bisphenol A/epichlorhydrin/polyethylene glycol polymer
  • Bisphenol A/epichlorhydrin/1,6-hexandiamine polymer

Group 2 is a list of 69 substances. The polymers of this group contain BPA as monomer without having epoxy group functionalities. Examples are:

  • Bisphenol A, polymer with formaldehyde
  • Bisphenol A/ethylene oxide polymer
  • Bisphenol A/formaldehyde/pentaerythritol/rosin, maleated polymer

Group 3 is a list of 57 substances. Examples of derivatives of bisphenol A (not polymers) are stated below:

  • Phenol, 4,4'-(1-methylethylidene)bis(2,6-dichloro)-
  • Bisphenol A bis (2-hydroxypropyl)ether
  • Phenol, 4,4'-(2,2,2-trifluoro-1-(trifluoromethyl)ethylidene)bis-
  • Bisphenol A bis(2-hydroxyethylether)-dimethacrylat

The function registered in the DPR of BPA-substances in products is stated below according to the three groups:

  • Group 1: mainly as binder
  • Group 2: mainly as binder
  • Group 3: mainly as binder and monomer

The function of the substances/polymers is mainly registered as binders in the DPR. The registered function "monomer" in group 3 is probably related to the acrylates represented by this group. Acrylates are monomers used for the manufacture of thermosetting acrylic surface-coating resins.

The registered function of substances in products is based on a predetermined list of functions and on the knowledge of the persons working in the DPR. The manufacturer or the supplier of a product is not required to provide this kind of information.

The substances mentioned in the three lists were mapped according to product types and trades in which the substances are used.

3.2 Mapping of bisphenol A substances

The results of mapping the BPA-substances in groups 1, 2 and 3 are stated below in Tables 3.1 and 3.2.

Table 3.1 lists the various product types containing BPA-substances from the three groups. Volume (T) is the total quantity (tonnes/year) of all BPA-substances used in products in a certain product type. The number columns give the total of products containing BPA-substances within each product type.

Table 3.1 gives a selection of product types. The selection criterion was:

  • Product types relevant to the focus areas of this project
  • Product types with most products containing BPA-substances

In Table 3.1 the product types relevant to the focus area of this project are typed in italics.

Table 3.1 shows, for instance, that there are 72 "printing inks products" containing BPA-substances from Group 1 and that the total quantity of substances from all groups is 28 tonnes/year.

Table 3.1 shows a selection of product types containing BPA-based substances. For each of the three groups, the table states the number of products containing BPA-substances within each product type (Number). Furthermore, the table gives the total amount (in tons) of BPA-substances from all three groups forming part of products within each product type (Volume). Product types relevant to the focus areas of this project are typed in italics.

The product types

  • Paint and lacquers/varnishes
  • Surface treatment of metal (not paints etc.)

are related to the epoxy-coating of food and beverage containers, which is one of the focus areas of this project.

The product types

  • Printing inks
  • Writing materials

are related to toners, which are another focus area of this project.

The product types

  • Surface treatment of paper and other non-metallic materials
  • Impregnation agents

are related to thermographic printing, which is also a focus area of this project.

Table 3.1 Mapping of product types containing bisphenol A substances.

PRODUCT TYPE All three groups Group 1 Group 2 Group 3
  Volume (T) Number Number Number
Paint and lacquers/ varnishes  7064 1146 52 6
Hardeners 2121 457 19  
Binding agents (see also Adhesives)  7635 353 6 9
Adhesives (see also Binding agents)  191 232 29 49
Filling materials (see also Fillers; Insulation materials) 162 212 13 25
Flooring materials/Casting materials 458 180 4 4
Printing inks  28 72 3  
Construction materials 326 49   4
Surface treatment of metal (not paints etc.)  77 43    
Surface treatment of paper and other non-metallic materials  56 38    
Anti-corrosion materials 59 29    
Inhibitors 38 22 3  
Impregnation agents 9 11 3  
Writing materials  1   5  

Table 3.1 shows that Group 1, epoxy polymers, is the largest group both with regard to members and to quantity in the investigated product types. This is not surprising considering the number of substances in Group 1. The table shows that epoxy polymers are widely used in many products.

Table 3.2 lists the various trades using the BPA-substances in the three groups. The volume (T) is the total quantity (tonnes/year) of all BPA-substances used in products within a certain trade category. For each trade category the number columns specify the total products containing BPA-substances.

Table 3.2 gives a selection of trades. The selection criterion was:

  • Trades relevant to the focus areas of this project
  • Trades using most products containing BPA-substances

Table 3.2. shows, for instance, that there are 801 products containing Group 1 BPA-substances, which are used in the trade category "Manufacture of fabricated metal products, except machinery and equipment", and that the total quantity of BPA-substances from all three groups is 6648 tonnes/year.

Table 3.2 gives a selection of trades using products containing BPA-based substances. For each of the three groups, the table states the number of products containing BPA-substances within a certain trade (Number). Furthermore, the table gives the total amount (in tons) of BPA-substances from all three groups used by a certain trade (Volume). Trade categories relevant to the focus areas of this project are typed in italics.

In Table 3.2 the product types relevant to the focus area of this project are typed in italics.

The trade categories

  • Manufacture of fabricated metal products, except machinery and equipment
  • Manufacture of chemicals and chemical products (manufactures of paints, lacquers/varnishes, printing inks, etc.)

are related to epoxy-coating of food and beverage containers as well as to toners, which are the focus areas of this project.

The trade category

  • Manufacture of pulp, paper and paper products

is related to thermographic printing, which is another focus area of this project.

Table 3.2 Mapping of trade categories using products containing bisphenol A substances.

TRADE CATEGORY All three groups Group 1 Group 2 Group 3
  Volume (T) Number Number Number
Construction 3197 961 46 21
Manufacture of fabricated metal products, except machinery and equipment  6648 801 36 29
Manufacture of other transport equipment (not motor vehicles/cars) 7073 547 18 5
Manufacture of furniture; manufacturing (not otherwise specified)  552 284 13 3
Sale, maintenance and repair of motor vehicles and motorcycles; retail sale of automotive fuel  164 239 37 24
Manufacture of wood and products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials 437 269 10  
Manufacture of rubber and plastic products  221 181 14 11
Manufacture of chemicals and chemical products  1840 159 7 3
Manufacture of machinery and equipment 991 116 14 30
Manufacture of electrical machinery and apparatus  5396 139 6 3
Manufacture of motor vehicles, trailers and semi-trailers  2442 89 9 4
Publishing, printing and reproduction of recorded media  267 90 4  
Extraction of crude petroleum and natural gas 287 70    
Manufacture of electronic equipment 23 54 6 9
Manufacture of basic metals  121 64    
Manufacture of radio, television and communication equipment  90 56    
Manufacture of medical, precision and optical instruments, watches and clocks 74 29 6 13
Manufacture of pulp, paper and paper products  12 18    

Table 3.2 also shows that Group 1 is the largest group both with regard to numbers and to quantity in the investigated trade categories.

There is not direct connection between Tables 3.1 and 3.2 as regards the figures and amounts stated. The individual product may be registered under more product types and especially under more trade categories and subcategories. Tables 3.1 and 3.2 must thus be considered as independent tables and amounts and numbers in the two tables must be considered as relative figures.

The two tables show that the BPA-substances are widely used in most product types and trade categories investigated and that the DPR thus covers the focus areas of this project. However, some of the product types and trade categories cover more than just the focus areas. For instance, products, such as "paint and lacquers/varnishes" are not only related to the application "epoxy coated food and beverage containers". Products as "paint and lacquers/varnishes" have other applications, such as floor varnishing. The product type "toner" is not listed as containing BPA-substances. This may be due to the fact that toners do not have to be registered in the DPR or that they do not contain BPA-substances at all.

3.3 Information on alternatives

The search for information on substances/alternatives to BPA-substances from the DPR was divided into the following areas:

  • Alternatives relating to coated food and beverage containers:
    1. Search on substances in products used by manufacturers of other fabricated metal products for instance manufacturing of light metal packaging (Table 3.3).
    2. Search on substances in products with product type "Surface treatment of metal (not paints etc.)" (Table 3.4).
    3. Search on substances in products of the product type "Paint, lacquers/varnishes" (Table 3.5).
  • Alternatives relating to toners:
    1. Search on substances in products of the product type "Toners and Writing materials" (Table 3.6).

    2. Searching on substances in products of the product type. "Printing inks" (Table 3.7).

The generated lists of non-BPA-based substances in the above mentioned product types are only indications of possible alternatives to BPA-substances for the specified applications. The proposals for alternative substances are based on polymers which do not contain the monomer bisphenol A. Tables 3.3 – 3.7 state the alternatives found with respect to the above areas 1-5.

Table 3.3 Substances/polymers in products used by manufactures of other fabricated metal products, e.g. manufacturing of light metal packaging

Substance group CAS No. Name
Polyalkenes 9002-88-4 Polyethylene
Polyethers 9016-45-9 Polyethylene glycol nonylphenyl ether (unspec.)
9038-95-3 Polyethylene-polypropylene glycol, monobutyl ether
25322-68-3 Polyethylene glycol
109909-39-9 Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-(2,4,6-tris(1-methylpropyl)phenoxy)-, sodium salt
Vinyl polymers 63148-65-2 Polyvinyl butyral
Formaldehyde polymers 28064-14-4 Phenol, polymer with formaldehyde, oxiranylmethyl ether
9003-35-4 Phenol-formaldehyde resin
68002-20-0 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, methylated
Silicones 63148-62-9 Polydimethylsiloxane
Alkydes
(polyester resins)
64754-99-0 Fatty acids, C18-unsatd, dimers, compds. with polyethylenepolyamine-tall-oil fatty acid reaction products
999981-37-2 Diethylenetriamine/maleic acid anhydride/polyethylene glycol/tall oil fatty acid polymer

Table 3.4 Substances/polymers in products of the product type "Surface treatment of metal (not paints etc.)"

Substance group CAS No. Name
Polyalkenes 9002-88-4 Polyethylene
Polyethers 9003-11-6 Polyoxyethylene - polyoxypropylene copolymer
9004-78-8 Polyethylene glycol phenyl ether
9016-45-9 Polyethylene glycol nonyl phenyl ether
9036-19-5 Glycols, polyethylene, mono((1,1,3,3-tetramethylbutyl)phenyl) ether
9038-95-3 Polyethylene-polypropylene glycol, monobutyl ether
25322-68-3 Polyethylene glycol
69011-36-5 Poly(oxy-1,2-ethanediyl), alpha-tridecyl-omega-hydroxy-, branched
Vinyl polymers 9002-89-5 Polyvinyl alcohol
9003-44-5 Propane, 1-(ethenyloxy)-2-methyl-, homopolymer
63148-65-2 Polyvinyl butyral
Formaldehyde polymers 25085-50-1 p-tert-Butylphenol, formaldehyde resin
28064-14-4 Phenol, polymer with formaldehyde, glycidyl ether
Silicones 63148-62-9 Polydimethylsiloxane
67762-85-0 Siloxanes and silicones, di-me, 3-hydroxypropyl me, ethers with polyethylene-polypropylene glycol mono-me ether
67762-90-7 Siloxanes and silicones, di-me, reaction products with silica
162567-81-9 Siloxanes and silicones, me hydrogen, reaction products with 1-octene and polypropylene glycol mono-bu ether
Styrene polymers 9003-55-8 Butadiene-styrene resin
Polyacrylates 9003-01-4 Acrylic acid homopolymer
26376-86-3 Ethyl acrylate - 2-ethylhexyl acrylate copolymer

Table 3.5 Substances/polymers in products with product type "Paint and lacquers/varnishes"

Substance group CAS No. Name
Polyalkenes 9002-88-4 Polyethylene
9003-07-0 Polypropylene
68131-87-3 Alkenes, ethylene-manuf-by-product dicyclopentadiene-conc, polymers with steam-cracked petroleum distillates
Polyethers 9003-13-8 Polypropylene glycol monobutyl ether
9014-85-1 Poly(oxy-1,2-ethanediyl), alpha,alpha'-(1,4-dimethyl-1,4-bis(2-methylpropyl)-2-butyne-1,4-diyl)bis(omega-hydroxy-
9016-45-9 Polyethylene glycol nonylphenyl ether
9036-19-5 Polyoxyethylene (1,1,3,3-tetramethylbutyl)phenyl ether
25322-68-3 Polyethylene glycol
51811-79-1 Poly(oxy-1,2-ethanediyl), alpha-(nonylphenyl)-omega-hydroxy-, phosphate
Vinyl polymers 9002-86-2 Polyvinyl chloride
9003-22-9 Vinyl chloride – vinyl acetate copolymer
9005-09-8 2-Butenedioic acid (2Z)-, polymer with chloroethene and ethenyl acetate
24937-78-8 Ethylenevinylacetate copolymer
25086-48-0 Vinyl chloride, vinyl acetate and vinyl alcohol copolymer
25213-24-5 Vinyl alcohol – vinyl acetate copolymer
63148-65-2 Polyvinyl butyral
68648-78-2 Polyvinylbutyral, vinyl alcohol, vinyl acetate copolymer
Formaldehyde polymers 9003-08-1 Melamine/formaldehyde resin
9003-35-4 Phenol-formaldehyde resin
9011-05-6 Urea – formaldehyde resin
25085-50-1 p-tert-Butylphenol, formaldehyde resin
25155-81-1 Formaldehyde, polymer with methylbenzene
28064-14-4 Phenol, polymer with formaldehyde, glycidyl ether
68002-19-7 Butylated polyoxymethylene urea
68002-20-0
68002-25-5
1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, methylated
1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, butylated
68002-25-5 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, butylated
68459-31-4 Fatty acids, C9-11-branched, glycidyl esters, polymers with castor oil, formaldehyde, 6-phenyl-1,3,5-triazine-2,4-diamine and phthalic anhydride
Silicones 63148-62-9 Polydimethylsiloxane
67762-90-7 Dimethyl siloxane, reaction product with silica
Alkydes
(polyester resins)
67700-92-9 Fatty acids, tall-oil, polymers with pentaerytritol and phthalic anhydride
68609-36-9 2,5-Furandione, reaction products with polypropylene, chlorinated
Styrene polymers 9003-53-6 Polystyrene
9003-55-8 Butadiene – styrene copolymer
9011-11-4 Ethenylbenzene, copolymer with (1-methylethenyl)benzene
Polyacrylates 9003-01-4 Polyacrylic acid
9011-14-7 Methyl methacrylate homopolymer
25035-69-2 2-Propenoic acid, 2-methyl-, polymer with butyl 2-propenoate and methyl 2-methyl-2-propenoate
25608-33-7 Butyl methacrylate, methyl methacrylate polymer
25767-47-9 Butyl acrylate, vinylbenzene polymer
25852-37-3 Butyl acrylate, methyl methacrylate copolymer
26376-86-3 Ethyl acrylate - 2-ethylhexyl acrylate copolymer
26898-31-7 Acrylic acid, methyl methacrylate, butyl methacrylate polymer
28262-63-7 Butyl methacrylate, methyl methacrylate, methacrylic acid polymer
28961-43-5 Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-((1-oxo-2-propenyl)oxy)-, ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1)
29299-77-2 Ethyl acrylate, methyl methacrylate, methacrylic acid, propylenimine polymer
52408-84-1 Poly(oxy(methyl-1,2-ethanediyl)), alpha,alpha',alpha''-1,2,3-propanetriyltris(omega-((1-oxo-2-propenyl)oxy)-
96591-17-2 Fatty acids, linseed-oil, reaction products with 2-amino-2-(hydroxymethyl)-1,3-propanediol and formaldehyde, polymers with Bu methacrylate, 2-(diethylamino)ethyl methacrylate, 2-hydroxyethyl acrylate and Me methacrylate
103991-32-8 ,2-Benzenedicarboxylic acid, mono(1-methyl-2-((2-methyl-1-oxo-2-propenyl)oxy)ethyl) ester, polymer with butyl 2-methyl-2-propenoate, butyl 2-propenoate and methyl 2-methyl-2-propenoate
Isocyanate polymers 39527-44-1 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-bis(isocyanatomethyl)cyclohexane
128683-23-8 Fatty acids, tall-oil, polymers with pentaerythritol, phthalic anhydride and 2,4-TDI
Polyamides 68082-29-1 Fatty acids, C18 unsaturated, dimers, polymers with tall oil fatty acids and triethylenetetramine
68604-06-8 Castor oil, hydrogenated, polymer with ethylenediamine, 12-hydroxyoctadecanoic acid and sebacic acid
Others 25038-74-8 Azacyclotridecane-2-one, homopolymer
25667-42-9 4,4'-Sulfonyldiphenol polymer, sru
63393-89-5 Coumarone – indene resins
64742-16-1 Petroleum resins
67746-08-1 Linseed oil, polymerized
68002-18-6 Urea, polymer with formaldehyde, isobutylated

Table 3.6 Substances/polymers in products with product type "Toners and Writing materials"

Substance group CAS No. Name
Polyalkenes 9002-88-4 Polyethylene
Polyethers 9038-95-3 Polyethylene-polypropylene glycol, monobutyl ether
25322-68-3 Polyethylene glycol
Vinyl polymers 9003-22-9 Vinyl chloride - vinyl acetate copolymer
63148-65-2 Polyvinyl butyral
Formaldehyde polymers 25054-06-2 Formaldehyde, polymer with cyclohexanone
Silicones 63148-62-9 Polydimethylsiloxane
Alkydes
(polyester resins)
999978-49-3 2,2-bis(Hydroxymethyl)butanol/ethylene glycol/3-hydroxymethyl)-2-methylpropionic acid/phthalic acid anhydride/ sunflower oil fatty acids, conjugated polymer
Styrene polymers  25085-34-1 Styrene acrylic acid copolymer
52831-04-6 Acrylic acid-alpha-methylstyrene - styrene copolymer

Table 3.7 Substances/polymers in products with product type. "Printing inks"

Substance group CAS No. Name
Polyalkenes  9002-88-4 Polyethylene
9003-29-6 Polybutene
Polyethers 9014-85-1 Poly(oxy-1,2-ethanediyl), alpha,alpha'-(1,4-dimethyl-1,4-bis(2-methylpropyl)-2-butyne-1,4-diyl)bis(omega-hydroxy-
Vinyl polymers 9002-86-2 Polyvinyl chloride
9002-89-5 Polyvinyl alcohol
9003-22-9 Vinyl chloride - vinyl acetate copolymer
25086-48-0 Vinyl chloride, vinyl acetate and vinyl alcohol copolymer
Formaldehyde polymers 9003-08-1 Melamine/formaldehyde resin
Silicones 63148-62-9 Polydimethylsiloxane
Alkydes
(polyester resins)
68333-69-7 Rosin, maleated, polymer with pentaerythritol
Styrene polymers 9003-55-8 Butadiene - styrene copolymer
Polyacrylates 9010-88-2 Ethyl acrylate, copolymer with methyl methacrylate
9011-14-7 Methyl methacrylate homopolymer
25608-33-7 Butyl methacrylate, methyl methacrylate polymer
26376-86-3 Ethyl acrylate - 2-ethylhexyl acrylate copolymer
28262-63-7 Butyl methacrylate, methyl methacrylate, methacrylic acid polymer

3.4 The DPR and search for bisphenol A alternatives

The Danish Product Register (DPR) registers hazardous products for professional use according to Danish legislation. This means that non-hazardous product like paper, bottles and other articles as well as products for private use are not covered by the DPR.

The mapping showed that BPA-substances are widely used in several product types.

The DPR registered function of BPA-substances in products is not designed for identifying alternative substances. The registration of function is not based on information from the manufacturer or supplier but is an assessment made by the case officer at the DPR. In addition, the DPR has not registered the function of substances for the last two years. Instead, the listed tables with possible alternatives are based on polymers relating to the focus areas of this project. Polymers are normally considered to have binding properties in the majority of products. However, the binding properties depend on molecular weight and functionality groups. The listed tables with alternative substances are only a supplement to the information from the industry.

It has not been possible to obtain information from the DPR on alternatives to BPA-substances in thermal paper. The function of pure BPA as developing agent in thermal paper has not been considered in the DPR search.

 



Version 1.0 March 2004, © Danish Environmental Protection Agency