Editing Resin identification code

{{Short description|Symbol to identify the type of plastic}}
{{broader|Recycling codes}}
{{Globalize|1=article|2=United States|date=August 2024}}
{{Infobox technology standard
| title             = Resin Identification Code
| long_name         = Standard Practice for Coding Plastic Manufactured Articles for Resin Identification
| image             = 
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| abbreviation      = 
| native_name       = <!-- Name in local language. If more than one, separate using {{plain list}} -->
| native_name_lang  = <!-- ISO 639-1 code e.g. "fr" for French. If more than one, use {{lang}} inside native_name items instead -->
| status            = 
| year_started      = 1988
| first_published   = <!-- {{Start date|YYYY|MM|DD|df=y}} -->
| version           = 
| version_date      = 
| preview           = 
| preview_date      = 
| organization      = {{Plain list|
* [[Society of the Plastics Industry ]] (1988-2008)
* [[ASTM International]] (2008-current)
}}
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| base_standards    = 
| related_standards = 
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| domain            = 
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| website           = {{URL|https://www.astm.org/d7611_d7611m-21.html}}
}}
[[File:Mint box polypropylene lid.JPG|thumb|upright|[[Polypropylene]] lid of a [[Tic Tac]] box, with a [[living hinge]] and the resin identification code, 5, under its flap]]

The '''Resin Identification Code '''('''RIC''') is a [[technical standard]] with a set of symbols appearing on [[plastic]] products that identify the [[Synthetic resin|plastic resin]] out of which the product is made.<ref name=":0">{{cite web|title=Standard Practice for Coding Plastic Manufactured Articles for Resin Identification|url=http://www.astm.org/Standards/D7611.htm|website=Standard Practice for Coding Plastic Manufactured Articles for Resin Identification|publisher=ASTM International|access-date=21 January 2016}}</ref> It was developed in 1988 by the [[Society of the Plastics Industry]] (now the [[Plastics Industry Association]]) in the United States, but since 2008 it has been administered by [[ASTM International]], an international [[standards organization]].<ref name=":0" />

Due to resemblance to the [[recycling symbol]], RIC symbols are often mistaken for the former.<ref>{{Cite web |last=Borst |first=Ellie |date=2023-05-15 |title=EPA looks to toss 'deceptive' plastics recycling symbol |url=https://www.eenews.net/articles/epa-looks-to-toss-deceptive-plastics-recycling-symbol/ |access-date=2024-05-06 |website=E&E News by POLITICO |language=en-US}}</ref> Subsequent revisions to the RIC have replaced the arrows with a solid triangle, but the old symbols are still in common use.

==History==
The US Society of the Plastics Industry (SPI) first introduced the system in 1988 as the "Voluntary Plastic Container Coding System". The SPI stated that one purpose of the original SPI code was to "Provide a consistent national system to facilitate recycling of post-consumer plastics."<ref>{{cite news|last1=Wilhelm|first1=Richard|title=Resin Identification Codes—New ASTM Standard Based on Society of the Plastics Industry Code Will Facilitate Recycling|url=http://www.astm.org/SNEWS/SO_2008/wilhelm_so08.html|access-date=21 January 2016|work=Standardization News|issue=September/October 2008|publisher=ASTM International|archive-url=https://web.archive.org/web/20201125105205/http://www.astm.org/SNEWS/SO_2008/wilhelm_so08.html|archive-date=November 25, 2020|url-status=dead}}</ref> The system has been adopted by a growing number of communities implementing recycling programs, as a tool to assist in sorting plastics. In order to deal with the concerns of recyclers across the U.S., the RIC system was designed to make it easier for workers in materials recovery and recycling facilities to sort and separate items according to their resin type.{{Citation needed|date=October 2018}} Plastics must be recycled separately, with other like materials, in order to preserve the value of the recycled material, and enable its reuse in other products after being recycled.

When a number is omitted, the arrows arranged in a triangle resemble the universal [[recycling symbol]], a generic indicator of recyclability. Subsequent revisions to the RIC have replaced the arrows with a solid triangle, in order to address consumer confusion about the meaning of the RIC, and the fact that the presence of a RIC symbol on an item does not necessarily indicate that it is recyclable any more than its absence means the plastic object is necessarily ''un''recyclable.

In 2008, [[ASTM International]] took over the administration of the RIC system and eventually issued ASTM D7611—Standard Practice for Coding Plastic Manufactured Articles for Resin Identification.<ref>{{cite web|title=Standard Practice for Coding Plastic Manufactured Articles for Resin Identification|url=http://www.astm.org/Standards/D7611.htm|website=Standard Practice for Coding Plastic Manufactured Articles for Resin Identification|publisher=ASTM International|access-date=14 January 2016}}</ref> In 2013 this standard was revised to change the graphic marking symbol of the RIC from the "chasing arrows" of the Recycling Symbol to a solid triangle instead.

=== Possible new codes ===
Modifications to the RIC are currently being discussed and developed by ASTM's D20.95 subcommittee on recycled plastics.<ref>{{cite web |title=Active Standards under the Jurisdiction of D20.95 |url=http://www.astm.org/COMMIT/SUBCOMMIT/D2095.htm |access-date=14 January 2016 |publisher=ASTM International |department=Subcommittee D20.95 on Recycled Plastics}}</ref>

In the U.S. the [[Sustainable packaging|Sustainable Packaging]] Coalition has also created a "[[How2Recycle]]" label<ref>{{cite web |title=How2Recycle |url=http://www.how2recycle.info |access-date=14 January 2016 |publisher=Sustainable Packaging Coalition}}</ref> in an effort to replace the RIC with a label that aligns more closely with how the public currently uses the RIC. Rather than indicating what type of plastic resin a product is made out of, the four "How2Recycle" labels indicate whether a plastic product is

* Widely Recycled (meaning greater than 60 percent of the U.S. can recycle the item through a curbside recycling program or municipal drop-off location).
* Limited (meaning only 20–60 percent of the U.S. can recycle the item through a curbside recycling program or municipal drop-off location).
* Not Yet Recycled (meaning less than 20 percent of the U.S. can recycle the item through a curbside recycling program or municipal drop-off location).
* Store Drop-Off (meaning the item can be recycled if brought to participating store drop-off locations, typically at grocery stores).

The "How2Recycle" labels also encourage consumers to check with local facilities to see what plastics each municipal recycling facility can accept.

==List==
The different resin identification codes are part of the [[Unicode block]] called [[Miscellaneous Symbols]] and have the following codes: ♳ (U+2673), ♴ (U+2674), ♵ (U+2675), ♶ (U+2676), ♷ (U+2677), ♸ (U+2678), and ♹ (U+2679). ♺ (U+267A).
{| class="wikitable sortable skin-invert-image"
|+Resin codes<ref>{{cite web |title=Plastic Packaging Resins |url=https://www.kuzeyborugroup.com/hdpe-pipe |url-status=dead |archive-url=https://web.archive.org/web/20220622065156/https://www.kuzeyborugroup.com/hdpe-pipe |archive-date=2022-06-22 |access-date=2022-06-30 |publisher=Kuzeyboru Group }}</ref><ref>{{cite magazine |url=http://www.goodhousekeeping.com/home/green-living/recycling-symbols-plastics-460321#slide-1 |title=What Do Recycling Symbols on Plastics Mean? |magazine=Good Housekeeping |access-date=2014-01-17 }}</ref>
|-
! Image
! Alternate image #1
! Alternate image #2
! Abbreviation
! Polymer name
! Uses
! Recycling
|-
| [[File:Symbol Resin Code 1.svg|50px|♳]]
| style="text-align: center;" | [[File:Symbol Resin Code 1 PETE.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 01 PET.svg|50px]]
| PETE or PET
| [[Polyethylene terephthalate]]
| Polyester fibers (Polar Fleece), thermoformed sheet, strapping, soft drink bottles, tote bags, furniture, carpet, paneling and (occasionally) new containers. (See also: [[Recycling of PET bottles]].)
| Picked up through most [[Curbside collection|curbside recycling programs]].
|-
| [[File:Symbol Resin Code 2.svg|50px|♴]]
| style="text-align: center;" | [[File:Symbol Resin Code 2 HDPE.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 02 PE-HD.svg|50px]]
| HDPE or PE-HD
| [[High-density polyethylene]]
| Bottles, grocery bags, milk jugs, recycling bins, agricultural pipe, base cups, car stops, playground equipment, and [[plastic lumber]]
| Picked up through most curbside recycling programs, although some allow only those containers with necks.
|-
| [[File:Symbol Resin Code 3.svg|50px|♵]]
| style="text-align: center;" | [[File:Symbol Resin Code 3 V.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 03 PVC.svg|50px]]
| PVC or V
| [[Polyvinyl chloride]]
| Pipe, window profile, siding, fencing, flooring, shower curtains, lawn chairs, non-food bottles, and children's toys.
| Too long life for significant recycling volumes although there was 740,000 tons recycled in 2018 through EU Vinyl 2010 and VinylPlus initiatives.<ref>{{Cite web|url=https://vinylplus.eu/resources/progress-report|title=Progress Report - VinylPlus|website=vinylplus.eu|access-date=2020-02-14}}</ref>
|-
| [[File:Symbol Resin Code 4.svg|50px|♶]]
| style="text-align: center;" | [[File:Symbol Resin Code 4 LDPE.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 04 PE-LD.svg|50px]]
| LDPE or PE-LD
| [[Low-density polyethylene]], [[Linear low-density polyethylene]]
| Plastic bags, [[six-pack rings]], various containers, dispensing bottles, [[wash bottle]]s, tubing, and various molded laboratory equipment
| LDPE is not often recycled through curbside programs and is a significant source of plastic pollution. LDPE can often be returned to many stores for recycling.
|-
| [[File:Symbol Resin Code 5.svg|50px|♷]]
| style="text-align: center;" | [[File:Symbol Resin Code 5 PP.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 05 PP.svg|50px]]
| PP
| [[Polypropylene]]
| Auto parts, industrial fibers, food containers, and dishware
|Picked up through most curbside recycling programs.
|-
| [[File:Symbol Resin Code 6.svg|50px|♸]]
| style="text-align: center;" | [[File:Symbol Resin Code 6 PS.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 06 PS.svg|50px]]
| PS
| [[Polystyrene]]
| Desk accessories, cafeteria trays, plastic utensils, coffee cup lids, toys, video cassettes and cases, clamshell containers, packaging peanuts, and insulation board and other [[Polystyrene#Solid foam|expanded polystyrene]] products (e.g., [[Styrofoam]])
| Polystyrene is often not recycled through curbside programs as it is too lightweight to be economical to recycle, usually incinerated instead.
|-
| [[File:Symbol Resin Code 7.svg|50px|♹]]
| style="text-align: center;" | [[File:Symbol Resin Code 7 OTHER.svg|50px]]
| style="text-align: center;" | [[File:Symbol Resin Code 07 O.svg|50px]]
| OTHER or O
| "Reserved for manufactured articles produced from any polymer chemistry not described by any other Code".<ref name=":0" />
| Bottles, [[plastic lumber]] applications, [[headlight]] lenses, and [[Safety glasses|safety shields/glasses]].
| Number 7 plastics are not typically recycled as they were mostly specialty produced in limited volumes at the time the codes were established.
|}

Below are the RIC symbols after ASTM's 2013 revision<ref>{{cite web |title=ASTM Plastics Committee Releases Major Revisions to Resin Identification Code (RIC) Standard |url=http://www.astmnewsroom.org/default.aspx?pageid=3115 |publisher=ASTM International |access-date=21 January 2016 |archive-date=2 July 2017 |archive-url=https://web.archive.org/web/20170702165848/http://www.astmnewsroom.org/default.aspx?pageid=3115 |url-status=dead }} Current location of similar page: https://newsroom.astm.org/astm-plastics-committee-releases-major-revisions-resin-identification-code-ric-standard</ref><ref>{{cite web|title=SPI Resin Identification Code—Guide to Correct Use|url=http://www.plasticsindustry.org/AboutPlastics/content.cfm?ItemNumber=823&navItemNumber=1125|archive-url=https://web.archive.org/web/20160126010101/http://www.plasticsindustry.org/AboutPlastics/content.cfm?ItemNumber%3D823%26navItemNumber%3D1125|publisher=SPI: The Plastics Industry Trade cs/content.cfm?ItemNumber=823&navItemNumber=1125|archive-date=26 January 2016|url-status=dead}}</ref>

[[File:RIC Updated.jpg|class=skin-invert]]

== Criticism ==
In the United States, use of the RIC in the coding of plastics has led to ongoing consumer confusion about which plastic products are recyclable. When many plastics recycling programs were first being implemented in communities across the United States, only plastics with RICs "1" and "2" (polyethylene terephthalate and high-density polyethylene, respectively) were accepted to be recycled. The list of acceptable plastic items has grown since then,<ref name=":0" /> and in some areas municipal recycling programs can collect and successfully recycle most plastic products regardless of their RIC. This has led some communities to instruct residents to refer to the form of packaging (i.e. "bottles", "tubs", "lids", etc.) when determining what to include in a curbside recycling bin, rather than instructing them to rely on the RIC.<ref>{{cite web|title=Please Recycle These Items|url=http://rumpke.com/for-your-home/recycling/acceptable-items|website=Rumpke Recycling|access-date=14 January 2016}}</ref> To further alleviate consumer confusion, the [[American Chemistry Council]] launched the "Recycling Terms & Tools" program to promote standardized language that can be used to educate consumers about how to recycle plastic products.

However, even when it is technically possible to recycle a particular plastic, it is often economically unfeasible to recycle it, and this can mislead consumers into thinking that more plastic is recycled than really is.<ref>{{cite web |url=https://www.npr.org/2020/09/11/897692090/how-big-oil-misled-the-public-into-believing-plastic-would-be-recycled |title=How Big Oil Misled The Public Into Believing Plastic Would Be Recycled|publisher=[[NPR]] |host=[[Laura Sullivan]] |date=September 11, 2020 |access-date=September 13, 2020}}</ref> In the U.S. in 2018, only 8.5% of [[plastic waste]] was recycled.<ref>{{cite news|title="Plastics: Material-Specific Data"|work=[[EPA]]|url=https://www.epa.gov/facts-and-figures-about-materials-waste-and-recycling/plastics-material-specific-data#:~:text=While%20overall%20the%20amount%20of,plastic%20containers%20is%20more%20significant.|access-date=4 December 2020}}</ref>

==See also==
* [[List of symbols]]
* [[Recycling codes]]
* [[Plastic recycling]]
* [[Thermoplastic]]—softens with heat
* [[Thermosetting polymer]]—does not soften with heat

==References==
{{Reflist|colwidth=35em}}

==External links==
{{Commons category|Resin identification codes}}
* {{Official website|https://store.astm.org/d7611_d7611m-21.html}}

{{Plastics}}

{{DEFAULTSORT:Resin Identification Code}}
[[Category:American inventions]]
[[Category:Consumer symbols]]
[[Category:Encodings]]
[[Category:Plastic recycling]]
[[Category:Polymers]]
[[Category:Classification systems]]