C6H2F8O4
290.06 g/mol
Electronic ChemicalWarning
Octafluoroadipic acid
CAS336-08-3EC206-407-1
Category
Electronic Chemical
Compound Class
Organic Acid
Primary Use
Top antireflective coating in lithography
Octafluoroadipic acid is a fluorinated dicarboxylic acid used as a top antireflective coating in semiconductor lithography. Its structure features two carboxylic acid groups and eight fluorine atoms, contributing to its utility in electronic chemical applications.
Top antireflective coating in lithographyNon-polymer PFAS for semiconductor industry
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Reading
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Read moreWhy the AI Boom Is Also a Chemistry Boom: Inside the Ultra-High-Purity Electronic Chemicals Supply Chain Behind HBM, CoWoS, and Electronic-Grade HF
An AI chip isn't just bigger than an ordinary chip — it passes through more lithography, etch, clean, and polish cycles, each consuming ultra-high-purity photoresist, CMP slurry, electronic-grade HF, sulfuric acid, and PGMEA at parts-per-trillion purity. A fact-based map of why this supply chain is short, hard to switch suppliers on, and now visibly tightening.
Read moreSafety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Octafluoroadipic acid (CAS 336-08-3) is 2917.19.
HS code (international, 6-digit)
2917.19
EU CN code (8-digit)
2917 19 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2,2,3,3,4,4,5,5-octafluorohexanedioic acid
InChIKey
AXRSOGFYDSXLQX-UHFFFAOYSA-N
SMILES
C(=O)(C(C(C(C(C(=O)O)(F)F)(F)F)(F)F)(F)F)O
Synonyms (10)
- HPFLDCA n=4
- Hexanedioic acid, octafluoro-
- Octafluoroadipic acid
- Octafluorohexanedioic acid
- Perfluoroadipic acid
- Perfluorohexanedioic Acid
- diPFHxA
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