Nickel

CAS 7440-02-0

Nickel is a hydrogenation catalyst, used to harden liquid oils into solid fats. It is a processing aid: the catalyst is filtered out and the finished fat is required to retain only traces.

Where it is and isn’t permitted

Status of Nickel by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted21 CFR 184.1537retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Refined from nickel ore and prepared as a finely divided catalyst, often on a support. Hydrogenation is the process that also produced trans fats, though that is a consequence of the reaction rather than of the nickel.

  • Vegan
  • Vegetarian
CAS registry number
7440-02-0
InChIKey
PXHVJJICTQNCMI-UHFFFAOYSA-N
PubChem
CID 935

Every name it appears under

64 recorded names. A label may use any of them.

CAS registry number

  • 7440-02-0
  • 8049-31-8

As it appears in regulation

  • Nickel

Other names

  • Al alloy CRM for Nickel in 242, O 64x25 mm
  • Alcan 756
  • Atomic Nickel
  • CCRIS 427
  • Dietary Nickel
  • Element Nickel
  • Fibrex
  • Fibrex P
  • HSDB 1096
  • Metallic nickel
  • Ni
  • NI 0901-S (harshaw)
  • niccolum
  • Niccolum metallicum
  • Nichel
  • NICKEL
  • NICKEL (III) ION
  • Nickel (Ni)
  • Nickel - Ni @ 1000 microg/g in Hydrocarbon Oil
  • Nickel - Ni @ 5000 microg/g in Hydrocarbon Oil
  • Nickel 200
  • Nickel 201
  • Nickel 205
  • Nickel 207
  • Nickel 270
  • Nickel AA Standard: Ni @ 1000 microg/mL in 5% HNO3
  • nickel atom
  • Nickel catalyst
  • Nickel foil
  • Nickel foil, 0.025mm (0.001in) thick, annealed
  • Nickel hydride
  • Nickel ion
  • Nickel ion(1+)
  • NICKEL METAL
  • Nickel on silica/alumina
  • Nickel particles
  • Nickel pellets
  • Nickel pieces
  • Nickel powder
  • Nickel rod
  • Nickel sponge
  • Nickel Standard
  • Nickel Standard: Ni @ 10 microg/mL in 2% HNO3
  • Nickel Standard: Ni @ 1000 microg/mL in 5% HNO3
  • Nickel Standard: Ni @ 10000 microg/mL in 5% HNO3
  • Nickel tubing
  • Nickel wire
  • Nickel wire, 0.5mm (0.02in) dia, annealed
  • Nickel wire, 1.0mm (0.04in) dia, annealed
  • Nickel wire, 2.0mm (0.08in) dia, annealed
  • nickel(1+)
  • nickel(1+) ion
  • Nickel, elemental
  • Nickel, elemental/metal
  • Nickel, ion (Ni1+)
  • Nickel,Raney Nickel
  • niquel
  • NUZ5T2QN2V
  • Raney Nickel
  • RCH 55/5

Systematic names

  • Nickel

Hazard reference values

Values set by assessing bodies. A body that has not set a value is not listed here.
TypeValuePopulationAssessed byOpinion
TDI13 µg/kg bwconsumersEFSA CONTAM2020
TDI2.8 µg/kg bwconsumersEFSA CONTAM2015

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/nickel.json