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1-Hydroxybenzotriazole Monohydrate

1-Hydroxybenzotriazole Monohydrate

CAS Number: 123333-53-9

Molecular Formula: C6H7N3O2

Peptide Coupling AgentCatalytic AdditiveIntermediate: Sitagliptin & Atazanavir DrugCorrosion inhibitorEnzymatic bleaching mediator

1-Hydroxybenzotriazole Monohydrate Specifications

CAS Number
123333-53-9
Molecular Formula
C6H7N3O2
IUPAC Name
1-hydroxybenzotriazole;hydrate
Canonical SMILES
C1=C(C(=C(C(=C1Br)C=O)F)Br)F
InChI Key
PJUPKRYGDFTMTM-UHFFFAOYSA-N
EINECS Number
219-989-7
MDL Number
MFCD00065690
Appearance
White to off-white powder
Density
1.065 g/cm
Boiling Point
344.6ºC at 760mmHg
Melting Point
155-160ºC
Flash Point
162.2ºC
Water Solubility
slightly soluble
Vapor Pressure
3.28E-05mmHg at 25°C
RIDADR
UN 3380 4.1/PG 1
Risk Statement Codes
R11; R5
Safety Statement Codes
S16-S33-S7/9
Precautionary Statement Codes
P210, P230, P240, P250, P280, P370+P380, P372, P373, P401, and P501
Supplemental Hazard Statements
Explosive when dry; Risk of explosion if heated under confinement

Detail 1

Store in a cool, dark place (recommended <15°C or at room temperature)

Detail 2

Some suppliers recommend 2–8°C for long-term stability

Detail 3

Keep in an inert atmosphere (e.g., nitrogen), protect from direct light and sunlight

Detail 4

Monohydrate form is safer than anhydrous form (dry residue remains an explosive hazard)

Detail 5

Avoid friction, impact, or exposure to heat sources

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

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California Prop 65*

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