Ingredient Dictionary

SODIUM IODIDE

Sodium iodide is a metal iodide salt with a Na(+) counterion.

Definition

Sodium iodide is a metal iodide salt with a Na(+) counterion. It is an iodide salt and an inorganic sodium salt.

Source: PubChem

US FDA substance register · UNII F5WR8N145C · registered name Sodium iodide · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Inhibits microbial growthANTIMICROBIAL

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

More data — names, identifiers, properties, test records, literature

Names & identifiers

SODIUM IODIDEINCI소듐아이오다이드Korean label name (MFDS standard)Sodium iodide (NaI)Synonym

CAS No.chemical registry number: 7681-82-5
EC No.EU chemical inventory number: 231-679-3
DTXSIDUS EPA chemical ID: DTXSID2041125
DTXCIDUS EPA compound ID: DTXCID0021125

IUPAC: Sodium iodide
Molecular formula: INa
Molecular weight: 149.89424 g/mol

Measured properties

Appearance: Liquid, CBI, Dry Powder, Wet Solid · White odorless deliquescent solid, Turned brown by air, [Merck Index] Colorless to white hygroscopic solid, [ICSC] White odorless crystalline powder, [MSDSonline]
Odour: ODORLESS · odourless
Boiling point: Decomposes · 1304 °C
Melting point: 651 · 651 °C
Solubility: Soluble · SOLUBILITY (G/100 CC SOLVENT): 184 G IN WATER @ 25 °C, 302 G IN WATER @ 100 °C, 42.57 G IN ALCOHOL @ 25 °C, 39.9 G IN ACETONE @ 25 °C
Density: 3.67 · 3.67 g/cm³
Stability: IT IS MADE SLIGHTLY ALKALINE TO RENDER IT MORE STABLE
pH: 8-9.5
Colour: white
Melting/freezing point: 651 ℃
Initial boiling point and range: 1304 ℃
Water solubility: 6971 ㎎/ℓ
n-Octanol/water partition coefficient (Kow): 0.04
Molecular weight: 149.89

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 7 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Soil amendments2
Processing aids not otherwise specified2
Adhesion/cohesion promoter1
Biocide1
Intermediate1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 2 eye studies are on record.

Classed as low1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 4 studies

Category 6.5B (Category 1)
Skin Sensitization · Read Across
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Moderate or Mild Irritation
eye irritation: in vivo · Screening · other guideline: according to
Severe Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to