Ingredient Dictionary

SODIUM THIOCYANATE

Sodium thiocyanate is an organic sodium salt which is the monosodium salt of thiocyanic acid.

Definition

Sodium thiocyanate is an organic sodium salt which is the monosodium salt of thiocyanic acid. It contains a thiocyanate.

Source: PubChem

US FDA substance register · UNII 5W0K9HKA05 · registered name SODIUM THIOCYANATE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Softens hairHAIR CONDITIONING

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

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

Official labels & definitions

JCIA labelling name チオシアン酸Ｎａ: 本品は、次の化学式で表される無機塩である。

Source: JCIA labelling names (Japan)

Names & identifiers

SODIUM THIOCYANATEINCI소듐티오시아네이트Korean label name (MFDS standard)Thiocyanic acid, sodium saltSynonymチオシアン酸ＮａJapanese labelling name

CAS No.chemical registry number: 540-72-7
EC No.EU chemical inventory number: 208-754-4
DTXSIDUS EPA chemical ID: DTXSID4021343
DTXCIDUS EPA compound ID: DTXCID101343

IUPAC: Sodium thiocyanate
Molecular formula: CNNaS
Molecular weight: 81.07 g/mol

Measured properties

Appearance: Sodium thiocyanate is an odorless white solid. Sinks and mixes with water. (USCG, 1999) · Sodium thiocyanate solution (56% or less) is an odorless clear to pale yellow liquid. (USCG, 1999)
Melting point: 572 °F (USCG, 1999) · ~300 °C
Solubility: Solubility in water, g/100ml at 21 °C: 139
Density: greater than 1 at 68 °F (USCG, 1999) · 1.7 g/cm³
Colour: white
Odour: odourless
Melting/freezing point: 300 ℃
Initial boiling point and range: 368 ℃
Vapour pressure: 0.0000000373 ㎜Hg (25℃)
Water solubility: 139 g/100㎖ (21℃)
Relative density: (&amp, gt, 1.0)
n-Octanol/water partition coefficient (Kow): -2.52
Decomposition temperature: 368 ℃
Molecular weight: 81.1

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 17 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.

Chemical reaction regulator3
Processing aids not otherwise specified3
Intermediate2
Hardener2
Filler2
Surface modifier1
Plasticizer1
Softener and conditioner1

2 other uses

Flocculating agent1
Surfactant (surface active agent)1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

4 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 6 studies

Classification not possible
Skin Sensitization · Screening
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay) according to EU Method B.42 (Skin Sensitisation: Local Lymph Node Assay) according to EPA OPPTS 870.2600 (Skin Sensitisation)
Classification not possible
Skin Irritation · Screening
Category 6.5B (Category 1)
Skin Sensitization · Read Across
Corrosive or Irritation Persists for > 21 days
eye irritation: in vivo · Screening · other guideline: JMAFF Guidelines (2000), including the most recent revisions. according to OECD Guideline 405 (Acute Eye Irritation / Corrosion) (2012) according to EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion) (2008) according to EPA OPPTS 870.2400 (Acute Eye Irritation) (1998) according to
Not classified
Eye Irritation · Screening