Provenance

Reference data from EU CLP Annex VI and published regulations — verify against your supplier's SDS before use.

Build a label

Substance profile

Fenaminosulf

Fenaminosulf is a yellowish-brown powder and is odorless.

CAS 140-56-7 C8H10N3NaO3S 251.24 g/mol Danger

01 · Identification

What Fenaminosulf is

Fenaminosulf is a yellowish-brown powder and is odorless. Its molecular formula is C8H10N3NaO3S and its molecular weight is 251.24 g/mol. It melts at 200 °C.

Under the GHS it carries the signal word Danger.

CAS number140-56-7
EC number205-419-4
Index number611-003-00-7
Molecular formulaC8H10N3NaO3S
Molecular weight251.24 g/mol

Other names for Fenaminosulf

  • fenaminosulf (ISO)
  • sodium 4-dimethylaminobenzenediazosulphonate

02 · GHS classification

Hazards and label elements

Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.

Signal wordDanger
Hazard statements assigned to Fenaminosulf
CodeHazard statement
H301 Toxic if swallowed.
H312 Harmful in contact with skin.
H412 Harmful to aquatic life with long lasting effects.

Precautionary statements: P270, P273, P280, P301, P302, P310, P312, P330, P352, P501

03 · Physical and chemical properties

Fenaminosulf properties

Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.

Property Value Conditions Source
Melting point 200 °C (392 °F) decomposes CAMEO
Solubility 10 to 50 mg/mL at 72.5 °F (NTP, 1992) at 22.5 °C CAMEO
IN WATER: 2-3 G/100 ML @ 25 °C; SOL IN DIMETHYLFORMAMIDE, ETHANOL; INSOL IN DIETHYL ETHER, BENZENE, PETROLEUM OILS at 25 °C HSDB
water solubility = 2X10+4 mg/l @ 25 °C at 25 °C HSDB
Vapor pressure Negligible HSDB

Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.

04 · Handling and storage

Storing and handling Fenaminosulf

Reactivity

Aqueous solutions are sensitive to exposure to light.

Source: CAMEO Chemicals

Planning storage for a mix of chemicals? Check Fenaminosulf in the storage compatibility matrix →

Get the free GHS / CLP / OSHA deadline calendar

Verified 2026–2029 compliance dates in one PDF — plus alerts when the rules change.