1(2H)-Phthalazinone
Preliminary reference disclaimer
This preliminary safety reference is generated from structured MolGraph catalog fields and public reference-style data. It is not a supplier-issued Safety Data Sheet and should not be used as a substitute for supplier-issued documentation, workplace safety review, transport classification, or regulatory compliance decisions. For supplier SDS or COA, submit a documentation request through MolGraph.
Preliminary safety reference
Available
Supplier-issued SDS
Available by request
COA
Available by RFQ / lot confirmation
Transport classification
Requires shipment review
CAS Number
119-39-1
Chemical name
1(2H)-Phthalazinone
Molecular formula
C8H6N2O
Molecular weight
146.15 g/mol
Synonyms
Phthalazin-1(2H)-one; Phthalazone; 1-Phthalazinol; Phthalazinone; 1-Hydroxyphthalazine; 1(2H)Phthalazinone; 1,2-dihydrophthalazin-1-one; 1-phthalazinone; 1-oxophthalazine; 2-hydrophthalazin-1-one; CCRIS 4860; HSDB 4310
InChIKey
IJAPPYDYQCXOEF-UHFFFAOYSA-N
PubChem CID
8394
Signal word
Warning
Catalog reference cue; confirm supplier documentation before use.
Hazard statements
H302
Catalog reference cue; confirm supplier documentation before use.
Appearance
Pale yellow solid; [CAMEO] Beige crystalline solid; [Aldrich MSDS]
Catalog reference value; verify against supplier SDS before use.
Melting Point
182.78–183.89 °C
Catalog reference value; verify against supplier SDS before use.
Water Solubility
1.99e+3 mol/L
Catalog reference value; verify against supplier SDS before use.
Vapor Pressure
Estimated very low; unit not specified
Catalog reference value; verify against supplier SDS before use.
XLogP
0.8
Catalog reference value; verify against supplier SDS before use.
Shipment review
Shipment details require review before fulfillment.
Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.