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Ingredients

Ingredient Dictionary

SODIUM TRIMETAPHOSPHATE

Molecular structure

How much products actually contain

No product states its amount yet.

Of the products containing it, 0 list it before the 1% line and 15 after it (usually 1% or less).

Products using this ingredient

12 of 15 confirmed · likeliest to carry enough first · See all 15

Definition

US FDA substance register · UNII 3IH6169RL0 · registered name Sodium trimetaphosphate · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Binds metal ions to prevent spoilageCHELATINGStops powders from cakingANTICAKINGKeeps pH steadyBUFFERING

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

Reviewed by CIR: Final Report on the Safety Assessment of Sodium Metaphosphate, Sodium Trimetaphosphate and Sodium Hexametaphosphate

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Safety Assessment of Phosphoric Acid and Its Salts as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

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

Official labels & definitions

JCIA labelling name トリメタリン酸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 TRIMETAPHOSPHATEINCI소듐트라이메타포스페이트Korean label name (MFDS standard)Metaphosphoric acid (H3P3O9), trisodium saltSynonymトリメタリン酸NaJapanese labelling name
CAS No.chemical registry number
7785-84-4
EC No.EU chemical inventory number
232-088-3
DTXSIDUS EPA chemical ID
DTXSID7052789
DTXCIDUS EPA compound ID
DTXCID3031365
IUPAC
Trisodium 2,4,6-trioxo-1,3,5,2lambda~5~,4lambda~5~,6lambda~5~-trioxatriphosphinane-2,4,6-tris(olate)
Molecular formula
Na3O9P3
Molecular weight
305.882 g/mol

Measured properties

Colour
white
Melting/freezing point
588 ℃
Water solubility
22 g/100g
Relative density
2.49
n-Octanol/water partition coefficient (Kow)
-9.55 (est.)
Molecular weight
308.91

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: KOSHA safety data sheets (Korea)

What products actually use it for

What the 27 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.

  • Stabilizing agent14
  • Chelating agent2
  • Processing aids not otherwise specified2
  • Corrosion inhibitor2
  • Plating agent2
  • Softener and conditioner2
  • pH regulating agent1
  • Degradant/impurity (EPA)1
1 other uses
  • Anti-caking agent1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

4 skin studies and 0 eye studies are on record.

Classed as low6

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
  • Studies Indicate No Significant Irritation
    skin irritation: in vivo · Screening · other guideline: no data no guideline followed
  • Studies Indicate No Significant Irritation
    skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion) equivalent or similar to
  • 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)
  • Studies Indicate No Significant Irritation
    skin irritation: in vivo · Screening · EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion) equivalent or similar to

Source: US EPA CompTox dashboard

Related literature

Linked databases 18