Formic acid
CAS Number 64-18-6
Chemical Formula CH2O2
Synonyms:
Acide formique
acideformique
cideformique(french)
Appearance liquid
HS Code 2915110000
MOQ Minimum Order Quantity 1 FCL Full Container Load
Products Description of Formic acid CAS#64-18-6
Formic acid appears as a colorless liquid with a strong pungent smell. It is a steady chemical that is corrosive, flammable, and moisture‑absorbing. It is not compatible with sulfuric acid, strong alkalis, furfuryl alcohol, hydrogen peroxide, strong oxidizers, and basic materials. Violent reactions may occur when it touches strong oxidizers.
Parameters
| Parameter | Value |
| Melting point | 8.2-8.4 °C (lit.) |
| Boiling point | 100-101 °C (lit.) |
| density | 1.22 g/mL at 25 °C (lit.) |
| vapor density | 1.03 (vs air) |
| vapor pressure | 52 mm Hg (37 °C) |
| refractive index | n 20/D 1.377 |
| FEMA | 2487 | FORMIC ACID |
| Fp | 133 °F |
| storage temp. | 2-8°C |
| solubility | H2O: soluble 1g/10 mL, clear, colorless |
| pka | 3.75 (at 20℃) |
| form | Liquid |
| Specific Gravity | 1.216 (20℃/20℃) |
| color | APHA: ≤15 |
| PH | 3.47 (1 mM solution); 2.91 (10 mM solution); 2.38 (100 mM solution) |
| Odor | at 0.10 % in water. pungent vinegar formyl |
| Odor Type | acetic |
| biological source | synthetic |
| explosive limit | 12-38% (V) |
| Water Solubility | MISCIBLE |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.03; λ: 280 nm Amax: 0.01 |
| Merck | 14,4241 |
| JECFA Numbr | 79 |
| BRN | 1209246 |
| Henry’s Law Constant | At 25 °C: 95.2, 75.1, 39.3, 10.7, and 3.17 at pH values of 1.35, 3.09, 4.05, 4.99, and 6.21, respectively (Hakuta et al., 1977) |
| Dielectric constant | 58.0（16℃） |
| Exposure limits | TLV-TWA 5 ppm (～9 mg/m³) (ACGIH, MSHA, OSHA, and NIOSH); IDLH 100 ppm (180 mg/m³) (NIOSH). |
| Stability: | Stable. Substances to be avoided include strong bases, strong oxidizing agents and powdered metals, furfuryl alcohol. Combustible. Hygroscopic. Pressure may build up in tightly closed bottles, so bottles should be opened carefully and vented periodically. |
| InChIKey | BDAGIHXWWSANSR-UHFFFAOYSA-N |
| LogP | -0.540 |
| CAS DataBase Reference | 64-18-6 (CAS DataBase Reference) |
| NIST Chemistry Reference | Formic acid (64-18-6) |
| EPA Substance Registry Systm | Formic acid (64-18-6) |
Safety Information
| Item | Details |
| Hazard Codes | T,C,Xi |
| Risk Statements | 23/24/25-34-40-43-35-36/38-10 |
| Safety Statements | 36/37-45-26-23-36/37/39 |
| RIDADR | UN 1198 3/PG 3 |
| OEB | B |
| OEL | TWA: 5 ppm (9 mg/m3) |
| WGK Germany | 2 |
| RTECS | LP8925000 |
| F | 10 |
| Autoignition Temperature | 1004 °F |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | II |
| HS Code | 29151100 |
| Hazardous Substances Data | 64-18-6 (Hazardous Substances Data) |
| Toxicity | LD50 in mice (mg/kg): 1100 orally; 145 i.v. (Malorny) |
| IDLA | 30 ppm |
Product Application of Formic acid CAS#64-18-6
Organic acids, feed additives, paper chemicals, food additives, organic intermediates, natural equivalent flavors and artificial flavors, high purity solvents, analytical standards, gas chromatography standards color scale, formic acid, impurity reference substances, organic raw materials.
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