Fluorescent Brightener 393 is the organic compound.
Definition
US FDA substance register · UNII 128BY3ERD5 · registered name FLUORESCENT BRIGHTENER 393 · single chemical substance
Fluorescent Brightener 393 is the organic compound.
Cosmetic roles
Safety & regulatory references
- Banned
- South Korea
Source: MFDS (Korea) cosmetic regulatory information
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 1533-45-5
- DTXSIDUS EPA chemical ID
- DTXSID4051744
- DTXCIDUS EPA compound ID
- DTXCID0030299
- IUPAC
- 2,2'-[Ethene-1,2-diyldi(4,1-phenylene)]bis(1,3-benzoxazole)
- Molecular formula
- C28H18N2O2
- Molecular weight
- 414.464 g/mol
Measured properties
- Appearance
- Dry Powder · solid
- pH
- 8.63
- Melting/freezing point
- 349.8 ℃
- Flash point
- 282.6 ℃
- Flammability (solid, gas)
- not flammable
- Vapour pressure
- 0 ㎩ (25℃)
- Water solubility
- &, lt, 0.01 ㎎/ℓ (25℃)
- Vapour density
- 1.342 g/㎤
- n-Octanol/water partition coefficient (Kow)
- 5.499 (log Pow, 25℃)
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 21 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.
- Brightener17
- Dye3
- Processing aids not otherwise specified1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
3 skin studies and 0 eye studies are on record.
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 3 studies
- Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to other guideline: as mentioned below - Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: OECD Guideline 402 (Acute Dermal Toxicity) according to - Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: as mentioned below according to
Source: US EPA CompTox dashboard
Linked databases 12
- Australian Industrial Chemicals Inventory (AICIS)
- EU CosIng ingredient list 2
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic regulatory information 2 3
- PubChem
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata