Manufacturer of sodium cyanide, potassium cyanide and hydrocyanic acid as well as provider of technical services for the entire cyanide life cycle
CyPlus GmbH
Darmstadt · Wesseling · Worms · Coatzacoalcos (MX)New on Amplifa
About CyPlus
CyPlus GmbH, headquartered in Darmstadt, is a manufacturer of cyanide products and a provider of related technologies and services. The portfolio includes sodium cyanide (CyPlus Sodium Cyanide), potassium cyanide and hydrocyanic acid as well as dissolvable technologies such as SLS Technology (Solid to Liquid Solution). Production takes place at the Wesseling site, among other things using the BMA process, in which methane is reacted with ammonia to form hydrogen cyanide. The company accompanies the entire life cycle chain of its products – from production, transport and handling through to application and disposal – and offers Responsible Care Services such as cyanide training, gap analyses and emergency trainings as well as technical and engineering support for gold mineral processing and metal surface treatment. With more than 100 employees, production sites in Europe and Mexico (joint venture CyPlus Idesa, 40,000 t/year) and sales offices worldwide, CyPlus serves the mining/precious metals, metal surface treatment, chemical intermediates and pharmaceutical industries. Since 2019, the company has been part of the Röhm Group.
- Site
- Darmstadt
- Processes
- Manufacture of sodium cyanide (CyPlus Sodium Cyanide), Manufacture of hydrogen cyanide (HCN) via the BMA process, Manufacture of potassium cyanide (KCN), SLS Technology (Solid to Liquid Solution), Responsible Care Services (training, storage, handling, transportation, disposal, emergency, Technical consulting & engineering services for gold mineral processing and, Cyanide trainings (storage, handling, transport, disposal), On-site safety trainings
- Materials
- Sodium cyanide, Potassium cyanide, Hydrocyanic acid (Hydrocyanic Acid), Sodium Cyanide (CyPlus Sodium Cyanide), Potassium Cyanide, Hydrocyanic Acid (HCN, BMA Process), SLS Technology (Solid to Liquid Solution), CyPlus CCS
- Certificates
- ISO 9001:2015, ISO 14001:2015, ISO 50001:2018, International Cyanide Management Code (ICMC), ICMC (International Cyanide Management Code)
- Founded
- 2003
- Employees
- >100
- Industries
- Mining / Precious Metals (Gold Extraction), Metal Surface Treatment, Chemical Intermediates & Pharmaceuticals
- 01
Chemical synthesis (HCN via BMA process)
- 02
Manufacture of sodium cyanide / potassium cyanide
- 03
SLS Technology ex plant Wesseling
- 04
Transport & Handling
- 05
Technical consulting & engineering support
- 06
Responsible Care Services (training, disposal, emergency response)
Products & Processes
Sodium Cyanide (CyPlus Sodium Cyanide)
Main product for gold extraction in mining, since 2021 also with a color indicator for safety at mine sites.
Potassium Cyanide
Cyanide product with roots in Hector Roessler's production from 1864, used among other things in metal surface treatment.
Hydrocyanic Acid (HCN, BMA Process)
Produced in Wesseling by reacting methane with ammonia and used as a starting material for cyanide products.
SLS Technology (Solid to Liquid Solution)
Dissolvable technology for cyanide solutions, available ex plant Wesseling since 2010.
CyPlus CCS
Technical/engineering product to expand the cyanide portfolio, introduced from 1995.
Sites
Darmstadt
DEHQ, Marketing & Sales, Technical Services
Wesseling
DEProduction site (sodium cyanide, HCN via BMA process)
- Materials
- NaCN, HCN
Worms
DEResearch & Development
Coatzacoalcos
MXProduction in the JV CyPlus Idesa S.A.P.I. de C.V., 40,000 t sodium cyanide/year
- Materials
- NaCN
Products & Applications
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of sodium cyanide (CyPlus Sodium Cyanide)Engineering | – | – | – | – | Sodium cyanide |
| Manufacture of hydrogen cyanide (HCN) via the BMA processEngineering | – | – | – | – | Hydrocyanic acid (HCN) |
| Manufacture of potassium cyanide (KCN)Engineering | – | – | – | – | Potassium cyanide |
| SLS Technology (Solid to Liquid Solution)Engineering | – | – | – | – | Sodium cyanide |
| Responsible Care Services (training, storage, handling, transportation, disposal, emergencyEngineering | – | – | – | – | Cyanides |
| Technical consulting & engineering services for gold mineral processing andEngineering | – | – | – | – | Cyanides |
Additional services
Quality & Certification
CyPlus GmbH in Darmstadt and the production site Wesseling are certified as part of the integrated management system of the Röhm Group according to ISO 9001, ISO 14001 and ISO 50001 (DQS). In addition, there is full compliance with the International Cyanide Management Code (ICMC).
| Evidence | Darmstadt | Wesseling | Worms | Coatzacoalcos |
|---|---|---|---|---|
| ISO 9001:2015 | ||||
| ISO 14001:2015 | ||||
| ISO 50001:2018 | ||||
| ICMC (International Cyanide Management Code) |
History
- 1864
Hector Roessler began producing potassium cyanide in Frankfurt am Main; the plant later became part of Degussa AG, founded in 1873.
- 1901
Using the Castner process, Degussa produced the world-famous “Cyanide Eggs” in Frankfurt.
- 1952
Degussa started HCN production at the new Wesseling site.
- 1957
Start of sodium cyanide production in Wesseling.
- 1975
Second plant in Wesseling for HCN production using the BMA process, which is still in use today.
- 1992
Degussa founded the 50/50 joint venture Cyanco in Winnemucca, NV, USA with Mining Services International.
- 1995
Expansion of the portfolio to include technical and engineering services (among others CyPlus CCS, CyPlus SLS).
- 1998
Degussa opened a terminal in Cadillac, QC, Canada.
- 2000
Degussa branded its cyanide products with the CyPlus® trademark; launch of the website www.cyplus.com.
- 2003
CyPlus GmbH was formed from the Degussa Mining Chemicals Line.
- 2007
50 years of the Wesseling cyanide plant.
- 2008
Divestment of the activities in the USA and Canada.
- 2010
Start of SLS Technology ex plant Wesseling.
- 2013
Joint venture Grupo Idesa / CyPlus for the construction of a NaCN plant in Coatzacoalcos, Mexico (40,000 t/year).
- 2016
CyPlus Idesa produced sodium cyanide for the first time.
- 2019
CyPlus GmbH became part of the Röhm Group, a 100% subsidiary of Advent International.
- 2020
Relocation of the company headquarters from Hanau to Darmstadt.
- 2021
Launch of CyPlus Sodium Cyanide plus Dye to increase safety at mine sites.
- 2025
Matthias Grömping became Managing Director as of 01.07.2025.