3-Methoxybenzoic acid
Synonym(s):m-Anisic acid;m-Methylsalicylic acid;3-Methoxybenzoic acid
- CAS NO.：586-38-9
- Empirical Formula: C8H8O3
- Molecular Weight: 152.15
- MDL number: MFCD00002499
- EINECS: 209-574-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 00:42:27
What is 3-Methoxybenzoic acid?
Chemical properties
white to light yellow crystal powder
Chemical properties
3-Methoxybenzoic acid is practically odorless.
The Uses of 3-Methoxybenzoic acid
3-Methoxybenzoic acid is used in the synthesis and characterization of 3-methoxybenzoates of europium (III) and gadolinium (III)1. It was used in conversion of aromatic carboxylic acids into methyl esters and reduction to the corresponding primary alcohols using a sodium borohydride-THF-methanol system
Definition
ChEBI: 3-methoxybenzoic acid is a methoxybenzoic acid that is benzoic acid substituted by a methoxy group at position 3. It has a role as a flavouring agent and a human urinary metabolite. It is functionally related to a 3-hydroxybenzoic acid. It is a conjugate acid of a 3-methoxybenzoate.
General Description
3-Methoxybenzoic acid is an important intermediate in the synthesis of natural products.
Safety Profile
Poison by intraperitoneal route.When heated to decomposition it emits acrid smoke andirritating fumes.
Purification Methods
Crystallise m-anisic acid from H2O (m 109o, 110.5o) or EtOH/water. The S-benzylisothiuronium salt has m 176o (from EtOH). [Beilstein 10 II 80, 10 III 244, 10 IV 316.]
Properties of 3-Methoxybenzoic acid
| Melting point: | 105-107 °C (lit.) |
| Boiling point: | 170-172 °C/10 mmHg (lit.) |
| Density | 1.2143 (rough estimate) |
| refractive index | 1.4945 (estimate) |
| FEMA | 3944 | 3-METHOXYBENZOIC ACID |
| Flash point: | 170-172°C/10mm |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | 95% ethanol: soluble50mg/mL, clear, colorless to faintly yellow |
| form | Powder |
| pka | 4.10(at 25℃) |
| color | Off-white to slightly yellow-beige |
| Water Solubility | Soluble in 95% ethanol (50 mg/ml), water (2 mg/ml at 25°C) and methanol. |
| JECFA Number | 882 |
| BRN | 508838 |
| CAS DataBase Reference | 586-38-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzoic acid, 3-methoxy-(586-38-9) |
| EPA Substance Registry System | Benzoic acid, 3-methoxy- (586-38-9) |
Safety information for 3-Methoxybenzoic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 3-Methoxybenzoic acid
| InChIKey | XHQZJYCNDZAGLW-UHFFFAOYSA-N |
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