Stannous chloride

E number E512INS 512CAS 7772-99-8

Used as an antioxidant — Codex also lists it as colour retention agent.

Stannous chloride is an antioxidant and colour retention agent used in canned white asparagus and some other canned vegetables, where it prevents discolouration.

Where it is and isn’t permitted

Status of Stannous chloride by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted, with conditions21 CFR 172.180retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFAPermitted, with conditions

3 food categories

highest permitted level 25 mg/kg

Show every food category
  • 04.1.2.4 Canned or bottled (pasteurized) fruit — 20 mg/kg
  • 04.2.2.4 Canned or bottled (pasteurized) or retort pouch vegetables (including mushrooms and fungi, roots and tubers, pulses and legumes, and aloe vera), and seaweeds — 25 mg/kg
  • 14.1.4 Water-based flavoured drinks, including "sport," “energy,” or "electrolyte" drinks and particulated drinks — 20 mg/kg
CXS 192-1995 Table One, INS 512and 2 further provisionsretrieved 2026-09-07

What it is made from

Made by dissolving tin metal in hydrochloric acid. Its use is narrow and its permitted levels low.

  • Vegan
  • Vegetarian
CAS registry number
7772-99-8
InChIKey
AXZWODMDQAVCJE-UHFFFAOYSA-L
PubChem
CID 24479

Every name it appears under

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

E number

  • E512

INS number

  • 512

CAS registry number

  • 10025-69-1
  • 7772-99-8

As it appears in regulation

  • Stannous chloride

Other names

  • Anhydrous stannous chloride
  • Anhydrous stannous chloride, 98%
  • CCRIS 560
  • Dichlorotin
  • E 512
  • EPA Method 1631, Stannous Chloride, 8 x 40g
  • HSDB 582
  • INS NO.512
  • INS-512
  • Kit for the Preparation of Technetium Tc 99m Red Blood Cells
  • SnCl(2)
  • Stannous chloride
  • Stannous chloride anhydrous
  • Stannous chloride dihydrate
  • Stannous chloride(Chunks or pellets)
  • Stannous dichloride
  • Tin (II) chloride
  • Tin chloride
  • Tin chloride (SnCl2)
  • Tin dichloride
  • Tin Dichloride; Dichlorotin; Tin Protochlorie; Tin Chloride; Tin (II) Chloride; Stannous Dichloride
  • tin(11) chloride
  • Tin(II) chloride (1:2)
  • Tin(II) chloride, >=99.99% trace metals basis
  • Tin(II) chloride, anhydrous
  • Tin(II) chloride, anhydrous, powder, >=99.99% trace metals basis
  • Tin(II) chloride, AR, >=99%
  • Tin(II) chloride, LR, >=98%
  • Tin(II) chloride, p.a., 97%
  • Tin(II) chloride, reagent grade, 98%
  • Tin(II) chloride, ReagentPlus(R), >=99%
  • Tin(II) chloride, ultra dry
  • Tin(II) chloride, Vetec(TM) reagent grade, 98%
  • tin(II) choride
  • tin(II)-chloride
  • tin(II)dichloride
  • tin-(II) chloride
  • tin-(II) dichloride
  • tin-(II)-chloride
  • tine (II) chloride
  • Uniston CR-HT 200

Systematic names

  • dichlorotin
  • tin(2+);dichloride;dihydrate

Hazard reference values

No reference value for this substance in the sources we hold.

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
  • gsfa 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/stannous-chloride.json