CAS 12225-21-7PubChem CID 22833487
C.I. Pigment Yellow 100
C.I. Pigment Yellow 100 is an organonitrogen compound and an organooxygen compound. It is functionally related to an alpha-amino acid. — ChEBI
- IUPAC name
- aluminum tris(4-[[3-carboxy-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulfonate)
- Molecular formula
- C48H33AlN12O27S6
- Molecular weight
- 1429.2 g/mol
- Exact mass
- 1427.9717743 Da
- Topological polar surface area
- 669.0 Ų
- Hydrogen-bond donors
- 6
- Hydrogen-bond acceptors
- 36
- Covalent units
- 4
- Defined stereocentres
- 0
Also known as
YELLOW LAKE TRefChem:572571JAPAN YELLOW 4 ALUMINUM LAKEFD AND C YELLOW NO. 5 ALUMINUM LAKE4,5-DIHYDRO-5-OXO-1-(4-SULFOPHENYL)-4-((4-SULFOPHENYL)AZO)-1H-PYRAZOLE-3-CARBOXYLIC ACID ALUMINUM COMPLEXaluminum;4-[[3-carboxy-5-oxo-1-(4-sulfophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulfonateCHEBI:189920CID 22833487
2 more reported names
aluminum;4-[[3-carboxy-5-oxo-1-(4-sulophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulonateAluminium tris(4-{[3-carboxy-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzene-1-sulfonate)
External database identifiers
- ChEBI:CHEBI:189920
- EPA DTXSID:DTXSID2025921
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match22833487
Attributed physical-property, hazard, environmental and use annotations.
- Melting Point: greater than 572 °F (NTP, 1992) Source: CAMEO Chemicals
- Physical Description: C.i. pigment yellow 100 is a yellow to greenish-yellow powder. (NTP, 1992) Source: CAMEO Chemicals
- Physical Description: Liquid; Other Solid; Wet Solid Source: EPA Chemical Data Reporting (CDR)
- Solubility: less than 1 mg/mL at 70 °F (NTP, 1992) Source: CAMEO Chemicals
- First Aid: EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.; SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.; INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) shou Source: CAMEO Chemicals
- Note: This chemical does not meet GHS hazard criteria for 100% (503 of 503) of all reports. Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: Not Classified; Reported as not meeting GHS hazard criteria by 503 of 503 companies. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 503 reports by companies from 1 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 503 of 503 reports by companies.; There are 0 notifications provided by 0 of 503 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Consumer Uses: Dye; Pigment Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Dye Source: EPA Chemical Data Reporting (CDR)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.