name: Rohm and Haas
description: |
  Rohm and Haas Company was an American specialty chemicals manufacturer
  founded in 1909 and headquartered in Philadelphia, Pennsylvania. The
  company produced electronic materials, specialty polymers, adhesives,
  coatings, paints, and process chemicals. On April 1, 2009, Rohm and Haas
  was acquired by The Dow Chemical Company for approximately $18.8 billion
  in cash and stock. The Rohm and Haas brand has since been largely retired
  and its product lines, technologies, and businesses have been integrated
  into Dow (now Dow Inc., NYSE: DOW). Some legacy product brands persist
  under Dow but the standalone company no longer exists.
image: ""
tags:
  - Chemicals
  - Specialty Chemicals
  - Materials Science
  - Defunct
  - Acquired
  - Dow
created: 2026-05-23
modified: 2026-05-23
specificationVersion: "0.20"
apis: []
maintainers:
  - FN: Kin Lane
    email: info@apievangelist.com
common:
  - type: Successor
    url: https://www.dow.com
  - type: AcquisitionAnnouncement
    url: https://corporate.dow.com/en-us/news/press-releases/dow-completes-acquisition-of-rohm-and-haas
  - type: Wikipedia
    url: https://en.wikipedia.org/wiki/Rohm_and_Haas
  - type: ParentCompany
    url: https://www.dow.com
status:
  active: false
  acquired: true
  acquiredBy: The Dow Chemical Company
  acquisitionDate: 2009-04-01
  acquisitionValueUSD: 18800000000
  successorEntity: "Dow Inc. (NYSE: DOW)"
  successorURL: https://www.dow.com
  notes: |
    Rohm and Haas does not operate as a standalone API provider. It has no
    public developer portal, no documented APIs, no SDKs, and no OpenAPI
    artifacts. All digital and developer surfaces, where they exist, are
    operated by Dow under dow.com. This repository exists only to record
    the historical entity and its acquisition by Dow for the API Evangelist
    network registry.