C6H9N3O2
155.15 g/mol
Research ReagentDanger
Cupferon
CAS135-20-6EC205-183-2
Category
Research Reagent
Compound Class
Other
Primary Use
Research Compound
Cupferron is an analytical reagent used for the separation and precipitation of metals. It is also employed as a quantitative reagent for vanadates and titanium, and for the colorimetric estimation of aluminum.
analytical reagent for metal separation and precipitationquantitative reagent for vanadates and titaniumcolorimetric estimation of aluminum
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.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 135-20-6
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Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H351Suspected of causing cancer
H350May cause cancer
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Cupferon (CAS 135-20-6) is 2929.90.
HS code (international, 6-digit)
2929.90
EU CN code (8-digit)
2929 90 90
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
azanium N-oxido-N-phenylnitrous amide
InChIKey
GDEBSAWXIHEMNF-UHFFFAOYSA-O
SMILES
C1=CC=C(C=C1)N(N=O)[O-].[NH4+]
Synonyms (19)
- Ammonium cupferron
- Cupferon
- Cupferron, ammonium salt
- Inhibitor NPH
- Kupferon
- Kupferron
- hydrogen cupferron