197378

Picric acid

moistened with water, ≥98%

• Synonym(s): 2,4,6-Trinitrophenol, PA
• Linear Formula: (O₂N)₃C₆H₂OH
• CAS Number: 88-89-1
• Molecular Weight: 229.10
• Colour Index Number: 10305
• Beilstein: 423400
• MDL number: MFCD00007102
• UNSPSC Code: 12352100
• PubChem Substance ID: 57647805

Properties

• vapor density: 7.9 (vs air)
• Quality Level: 200
• vapor pressure: 1 mmHg ( 195 °C)
• Assay: ≥98%
• form: powder or crystals (with a top layer of Liquid)
• contains: ≥35% water
• expl. lim.: 0.01 %
• mp: 122-123 °C (dried material) (lit.)
• solubility: alcohol: 1 (g/12 mL)(lit.); benzene: 1 g/10 mL; chloroform: 1 (g/35 mL); diethyl ether: 1 (g/65 mL)
• density: 1.763 g/cm³
• SMILES string: Oc1c(cc(cc1[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O
• InChI: 1S/C6H3N3O7/c10-6-4(8(13)14)1-3(7(11)12)2-5(6)9(15)16/h1-2,10H
• InChI key: OXNIZHLAWKMVMX-UHFFFAOYSA-N

Description

General description

Picric acid (PA, 2,4,6-trinitrophenol) is a polynitrated aromatic acid. It is strongly acidic in nature. Since it readily dissolves in water, it can easily pollute the environment on exposure. Sensitive detection of PA by tris-imidazolium salt, fluorescent [3+2] self-assembled nanoscopic organic cage and rhodamine based sensors have been reported. It is widely used for the determination of various organic compounds by spectrophotometric and extractive spectrophotometric methods.

Application

Picric acid has been used in the preparation of Bouin′s fixative and picric acid/sodium azide/multi-walled carbon nanotubes.

Picric acid was used in the quantitative determination of bisoprolol.

Safety Information

• Pictograms: GHS02,GHS06
• Signal Word: Danger
• Hazard Statements: H206,H302,H311 + H331
• Precautionary Statements: P210 - P212 - P230 - P233 - P280 - P370 + P380 + P375 - P501
• Hazard Classifications: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Desen. Expl. 1
• Storage Class Code: 4.1A - Other explosive hazardous materials
• WGK: WGK 2
• Flash Point(F): 302.0 °F - closed cup
• Flash Point(C): 150 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves