2-Nitrophenylacetic acid
- CAS NO.：3740-52-1
- Empirical Formula: C8H7NO4
- Molecular Weight: 181.15
- MDL number: MFCD00007190
- EINECS: 223-128-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:26:06
What is 2-Nitrophenylacetic acid?
Chemical properties
yellow to beige crystalline powder
The Uses of 2-Nitrophenylacetic acid
2-Nitrophenylacetic acid was used as an internal standard in the determination of the theophylline solubilizer salicylamide-O-acetic acid.
Definition
ChEBI: (2-nitrophenyl)acetic acid is a member of the class of phenylacetic acids that is phenylacetic acid in which the phenyl grup is substituted at the ortho- position by a nitro group. It is a C-nitro compound and a member of phenylacetic acids. It is functionally related to a nitrobenzene and a phenylacetic acid.
Safety Profile
Mutation data reported. Forms an explosive mixture with thionyl chloride. When heated to decomposition it emits toxic fumes of NOx.
Purification Methods
The acid crystallises as yellow needles from EtOH, EtOH/water and dry it over P2O5 under vacuum. The amide has m 160-161o (from *C6H6 plates or EtOH, needles). [Beilstein 9 III 2282, 9 IV 1687.]
Properties of 2-Nitrophenylacetic acid
| Melting point: | 137-140 °C (lit.) |
| Boiling point: | 314.24°C (rough estimate) |
| Density | 1.4283 (rough estimate) |
| refractive index | 1.5468 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| form | Crystalline Powder |
| pka | 4(at 25℃) |
| color | Yellow to beige |
| BRN | 1959243 |
| CAS DataBase Reference | 3740-52-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzeneacetic acid, 2-nitro-(3740-52-1) |
| EPA Substance Registry System | 2-Nitrophenylacetic acid (3740-52-1) |
Safety information for 2-Nitrophenylacetic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H341:Germ cell mutagenicity |
| Precautionary Statement Codes |
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2-Nitrophenylacetic acid
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