INSTITUTION PROFILE / ADHESIVES & ENCAPSULANTS
American Chemical Society
A US learned society that shapes the chemical industry through papers and substance numbers
The American Chemical Society (ACS) is a US society of chemists. It does not set standards or regulations for adhesives and encapsulants. It influences the field by controlling the flow of information: papers (the Journal of the American Chemical Society and others), chemical substance registry numbers (CAS Registry Numbers) and its annual meetings. The ingredients of an adhesive or an encapsulant are identified by CAS Registry Number, both in regulators' substance lists and in the chemistry literature. This profile looks at ACS's influence on adhesives and encapsulants as a source of information.
- ACS in 30 seconds
- What kind of body it is: the four types of influence
- What it does for adhesives and encapsulants
- How far its influence reaches (powers and geography)
- Who it works with
- Outlook
- Glossary, references and claim-to-source audit
1. ACS in 30 seconds
ACS's influence comes from controlling what gets written and what things are called. CAS Registry Numbers, managed by ACS's operating division CAS, have been the standard for identifying chemical substances since 1965, and the US EPA's TSCA Inventory identifies substances by CAS Registry Number and CA Index Name Sourced. So when a raw material in an adhesive or an additive in an encapsulant appears on a regulatory list, the "name tag" that points to that substance is issued on the ACS side. But whether that substance is regulated is decided by national regulators; ACS has no power to set standards or regulations Our calculation.
2. What kind of body it is: the four types of influence
Unlike the companies in this series, the institutions that appear in adhesives and encapsulants coverage do not sell adhesives or encapsulants. What separates them is the route by which they influence the industry, and that gives four types. ACS sits at the right-hand end, in the "Convening" type: it provides a place to publish (papers and meetings) and a shared ledger (the substance registry).
The act that incorporated ACS gives it the power to make its own rules, to elect members and to hold an annual meeting, and it contains a clause on investigating chemistry when called upon by the War or Navy Department Sourced. The act does not mention any power to regulate products or to set standards Our calculation.
3. What it does for adhesives and encapsulants
| Channel | What the primary sources say | Relevance to adhesives and encapsulants |
|---|---|---|
| Papers (ACS Publications) | DOIs registered with Crossref (as of 3 October 2026): Journal of the American Chemical Society 221,185; ACS Applied Materials & Interfaces 70,495; Macromolecules 52,572; Langmuir 61,564. About 2.23 million for ACS as a whole | Macromolecules (polymers), ACS Applied Materials & Interfaces (materials and interfaces) and Langmuir (surfaces and interfaces) are titles under which basic research on adhesion and encapsulation can appear. We could not open each journal's scope page, so this selection is ours |
| CAS (Chemical Abstracts Service) | An operating division of ACS. Launched the abstracting journal Chemical Abstracts in 1907. CAS Registry Numbers have been the standard for identifying substances since 1965. The CAS REGISTRY database holds over 290 million substances. CAS says governments and regulators use the numbers to identify substances | A number that points to one substance: a resin, hardener, filler or additive. The US EPA's TSCA Inventory identifies substances by CAS Registry Number and CA Index Name |
| Annual meeting | ACS Fall 2026 was held in Chicago on 23-27 August 2026. 31 divisions and 10 committees contributed programming, and 10,370 papers were accepted | A venue where polymer, materials and coatings work is presented. It is not a meeting devoted to adhesives or encapsulants |
| Divisions | ACS has 32 divisions. For example, the Division of Polymer Chemistry (POLY) serves members interested in polymer synthesis, characterisation and application; the Rubber Division works on elastomer education and networking | We could not confirm a division devoted to adhesives (the word "adhesive" does not appear on the POLY or Rubber Division websites) |
For people developing adhesives or encapsulants, ACS is not the body that defines how to measure things; it is the front door to the literature. Searching for papers on a new hardener or filler, or checking a raw material against a safety data sheet or a regulatory substance list, means using papers and CAS Registry Numbers. The standards that define how to measure bond strength or thermal conductivity, by contrast, come from standards bodies such as ISO and ASTM, not from ACS. It is also worth remembering that a journal paper is a peer-reviewed research report, a different kind of evidence from a manufacturer's stated value or a value specified in a standard.
4. How far its influence reaches (powers and geography)
| Aspect | What ACS has | What it does not have |
|---|---|---|
| Powers | Publishing papers, assigning CAS Registry Numbers (CAS assigns a number when a new substance enters the registry), holding the annual meeting, and running divisions and committees for members | Power to make laws or rules, to set test standards, or to certify products. Power to decide which substances are regulated |
| Geography | Worldwide researchers and companies. ACS publications and CAS data are used internationally, and regulators' lists such as the US EPA's TSCA Inventory use CAS Registry Numbers | Direct power over other countries' regulation. We did not check what regulators in Europe and elsewhere use for identification |
| Membership profile | 101,199 members. Of the 251,396 in the wider community, those whose occupation is known are about 15% industry, 25% academia and 2% government; more than half are unknown (as of 31 July 2025) | No count has been published for people working specifically on adhesives and encapsulants |
| Scale | 32 divisions; 10,370 accepted papers at ACS Fall 2026 | We could not open pages giving the budget or staff numbers |
Of the 251,396, about 148,000 are "Community Associates", people registered for what ACS's membership page describes as a complimentary, limited set of benefits. Regular members number 101,199. The DOI counts are lifetime totals for each journal, not counts of papers about adhesives or encapsulants Our calculation. We could not confirm paper or member counts limited to adhesives and encapsulants Not yet confirmed.
5. Who it works with
| Counterpart | Relationship | Source |
|---|---|---|
| CAS | An operating division of ACS (it grew out of Chemical Abstracts). Runs the substance registry and literature databases | CAS history page |
| US EPA | Identifies the substances on the TSCA Inventory by CAS Registry Number and CA Index Name. TSCA is the US chemical-substances regulation law | EPA's TSCA Inventory page |
| Division of Polymer Chemistry (POLY) | A non-profit technical division of ACS. Members worldwide with an interest in polymer synthesis, characterisation and application | POLY website |
| Rubber Division | ACS's Rubber Division: elastomer education and networking, technical meetings, and the journal Rubber Chemistry & Technology | Rubber Division website |
* We could not confirm, from primary sources, a direct relationship with the companies profiled in this series (Henkel, Resonac, Sumitomo Bakelite and others).
6. Outlook
| What can be read from the sources | Primary evidence | Type |
|---|---|---|
| The more substance lists regulators draw up, the more CAS Registry Numbers and CAS data will be used | CAS says governments and regulators use the numbers to identify substances, and the EPA's TSCA Inventory identifies substances by number. We did not check changes in the lists themselves | Inference |
| ACS aims to grow its members and society affiliates to 150,000 | The chair of ACS's Committee on Membership Affairs set out a multi-year vision of 150,000 members and affiliates (the same count was about 103,000 on 31 July 2025) | Not yet confirmed |
7. Glossary
- Federal charter (incorporation by Congress)
- Being established as a corporation by an act of Congress. ACS was incorporated by a 1937 act. Incorporation does not carry regulatory or certification powers.
- CAS Registry Number (CAS RN)
- An identification number given to one chemical substance. Up to 10 digits in three hyphen-separated parts; the last digit is a check digit.
- DOI
- A persistent identifier for papers and other items. The DOI counts here are registrations with Crossref, a rough proxy for the number of papers.
- Division
- A subject-based unit within ACS. Members join divisions and hear presentations in their own field at the annual meeting.
- TSCA Inventory
- The list, under the US chemical-substances law TSCA, of existing chemical substances manufactured, processed or imported in the United States (excluding those that qualify for an exemption).
8. References
- C&EN (ACS) Comment: A growing community with a shared vision (22 September 2025; 101,199 members, 251,396 in the wider community, occupational breakdown, the 150,000 goal; figures as of 31 July 2025). https://cen.acs.org/acs-news/comment/Comment-growing-community-shared-vision/103/web/2025/09
- US Government Publishing Office Statutes at Large vol. 50, pp. 798-799, "An Act To incorporate the American Chemical Society" (Public No. 358, approved 25 August 1937). https://www.govinfo.gov/link/statute/50/798
- ACS Join an ACS Division (32 divisions). https://www.acs.org/technical-divisions.html
- ACS ACS Membership (Community Associates receive a complimentary, limited set of benefits). https://www.acs.org/membership.html
- CAS CAS History (Chemical Abstracts launched in 1907; CAS as an operating division of ACS). https://www.cas.org/about/cas-history
- CAS CAS Registry (CAS Registry Numbers as the standard since 1965; over 290 million substances; use by regulators; how numbers are assigned). https://www.cas.org/cas-data/cas-registry
- C&EN (ACS) ACS Fall 2026 Chicago meeting guide (23-27 August 2026; 31 divisions and 10 committees; 10,370 accepted papers). https://cen.acs.org/acs-news/acs-fall-2026-chicago-meeting/104/web/2026/07
- Division of Polymer Chemistry Website (a non-profit technical division of ACS; polymer synthesis, characterisation and application). https://polyacs.org/
- Rubber Division, ACS Website (elastomer education and networking; Rubber Chemistry & Technology). https://rubber.org/
- Crossref DOI count for Journal of the American Chemical Society (retrieved 3 October 2026). https://api.crossref.org/journals/0002-7863
- Crossref DOI count for ACS Applied Materials & Interfaces (same date). https://api.crossref.org/journals/1944-8244
- Crossref DOI count for Macromolecules (same date). https://api.crossref.org/journals/0024-9297
- Crossref DOI count for Langmuir (same date). https://api.crossref.org/journals/0743-7463
- Crossref DOI count for ACS as a whole (Crossref member ID 316; same date). https://api.crossref.org/members/316
- US EPA TSCA Chemical Substance Inventory (substances identified by CAS Registry Number and CA Index Name). https://www.epa.gov/tsca-inventory
9. Claim-to-source audit
| Claim in the text | Type | Source |
|---|---|---|
| Members 101,199, wider community 251,396, occupational breakdown, goal of 150,000 members and affiliates (as of 31 July 2025), 2026 as the 150th anniversary (the 1876 founding year is our inference from it) | Sourced | Reference 1 https://cen.acs.org/acs-news/comment/Comment-growing-community-shared-vision/103/web/2025/09 |
| The 25 August 1937 incorporation act (Public No. 358), the corporation's objects and powers, and the clause on cooperation with the War and Navy Departments | Sourced | Reference 2 https://www.govinfo.gov/link/statute/50/798 |
| 32 divisions | Sourced | Reference 3 https://www.acs.org/technical-divisions.html |
| Community Associates receive a complimentary, limited set of benefits | Sourced | Reference 4 https://www.acs.org/membership.html |
| Chemical Abstracts launched in 1907; CAS is an operating division of ACS | Sourced | Reference 5 https://www.cas.org/about/cas-history |
| CAS Registry Numbers as the standard since 1965, more than 290 million substances in CAS REGISTRY, regulatory use, how numbers are assigned, number structure | Sourced | Reference 6 https://www.cas.org/cas-data/cas-registry |
| ACS Fall 2026: Chicago, 23-27 August, 31 divisions and 10 committees, 10,370 accepted papers | Sourced | Reference 7 https://cen.acs.org/acs-news/acs-fall-2026-chicago-meeting/104/web/2026/07 |
| POLY is a non-profit technical division of ACS (polymer synthesis, characterisation, application) | Sourced | Reference 8 https://polyacs.org/ |
| The Rubber Division's role and the journal Rubber Chemistry & Technology | Sourced | Reference 9 https://rubber.org/ |
| DOI counts (JACS 221,185; ACS AMI 70,495; Macromolecules 52,572; Langmuir 61,564; ACS overall about 2.23 million) | Sourced | Reference 10 https://api.crossref.org/journals/0002-7863 Reference 11 https://api.crossref.org/journals/1944-8244 Reference 12 https://api.crossref.org/journals/0024-9297 Reference 13 https://api.crossref.org/journals/0743-7463 Reference 14 https://api.crossref.org/members/316 |
| The EPA's TSCA Inventory identifies substances by CAS Registry Number and CA Index Name; scope of the Inventory | Sourced | Reference 15 https://www.epa.gov/tsca-inventory |
| The word "adhesive" does not appear on the POLY or Rubber Division websites (our own check) | Sourced | Reference 8 https://polyacs.org/ Reference 9 https://rubber.org/ |
| The four-type classification of institutions, and placing ACS in "Convening" | Our calculation | Our own classification (this article) |
| ACS has no authority over standards, regulation or certification | Our calculation | Our own reading of Reference 2 (the incorporation act lists no regulatory power) and References 5 and 6 |
| Choosing the journals whose titles suggest a link to adhesion and encapsulation | Our calculation | Our own selection from the titles in References 10 to 13; the scope of each journal was not confirmed |
| ACS's budget and staff numbers | Not yet confirmed | The About pages on acs.org could not be opened; this article does not state them |
| Whether ACS has a division dedicated to adhesives or encapsulants | Not yet confirmed | We could not confirm it from References 3, 8 and 9 (this article) |
| Paper counts or member counts limited to adhesives and encapsulants | Not yet confirmed | Not stated in References 1 to 15; we do not estimate them (this article) |
| The first item of the Chapter 6 outlook | Inference | Our own interpretation of References 6 and 15 |
| Growth to 150,000 members and affiliates | Not yet confirmed | A goal stated in Reference 1; whether it is met is not yet confirmed, and this article does not estimate it |
Last updated: 3 October 2026 / Troy Technical
Figures in this article come from ACS's magazine C&EN, the CAS website, US federal law, Crossref and EPA pages. Items marked "Inference" are our own reading of the primary sources. The About pages on the ACS website could not be opened, so budget and staff numbers are not given.