Ingredient Dictionary

PIGMENT RED 53:1

D&C Red No. 9 can cause cancer according to The Food and Drug Administration (FDA) and The National Toxicology Program.

Definition

D&C Red No. 9 can cause cancer according to The Food and Drug Administration (FDA) and The National Toxicology Program.

US FDA substance register · UNII 1FO1ZO92Y1 · registered name BRILLIANT RED · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Pigment Red 53:1 is classed chemically as a monoazo color. It conforms to the formula (This color is the barium salt of Pigment Red 53).

Cosmetic roles

Adds colourCOLORANT

Safety & regulatory references

Banned: Argentina · ASEAN · Brazil · Canada · China · European Union · South Korea
Restricted: Japan
Allowed colourant: United States

Source: MFDS (Korea) cosmetic regulatory information · US FDA prohibited and restricted ingredients

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

Source: Korea toxic substances GHS register (NIER)

Restriction II/401

Source: EU CosIng ingredient list

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

Names & identifiers

PIGMENT RED 53:1INCI피그먼트적색53:1호Korean label name (MFDS standard)Benzenesulfonic acid, 5-chloro-2-[(2-hydroxy-1-naphthalenyl)azo]-4-methyl-, barium salt (2:1)Synonym

CAS No.chemical registry number: 5160-02-1
EC No.EU chemical inventory number: 225-935-3
DTXSIDUS EPA chemical ID: DTXSID3021229
DTXCIDUS EPA compound ID: DTXCID801030385

IUPAC: Barium bis{5-chloro-2-[(2-hydroxynaphthalen-1-yl)diazenyl]-4-methylbenzene-1-sulfonate}
Molecular formula: C34H24BaCl2N4O8S2
Molecular weight: 888.93 g/mol

Measured properties

Appearance: D&c red 9 appears as odorless yellowish-red or reddish-orange powder. (NTP, 1992) · Red solid, [HSDB] Red powder, [MSDSonline]
Melting point: 649 to 653 °F (decomposes) (NTP, 1992) · 343-345 °C (decomposes)
Solubility: less than 0.1 mg/mL at 64 °F (NTP, 1992) · SLIGHTLY SOL IN WATER & ETHANOL, INSOL IN ACETONE & BENZENE
Density: 1.73 (NTP, 1992) - Denser than water, will sink · 1.66 g/cu cm
Odour: odourless
Melting/freezing point: 330 ℃
Water solubility: 0.00013 g/100㎖ (in water)
Relative density: 1.66
n-Octanol/water partition coefficient (Kow): -0.56
Auto-ignition temperature: (&amp, gt, 340℃)
Molecular weight: 444.5

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 19 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.

Pigment16
Intermediate2
Dye1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 2 eye studies are on record.

Classed as low3

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 · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: see below equivalent or similar to
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) equivalent or similar to
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · other guideline: see below equivalent or similar to