Difference between revisions of "Formic acid"
| Line 7: | Line 7: | ||
hydrogen carboxylic acid; methanoic acid; aminic acid; formylic acid | hydrogen carboxylic acid; methanoic acid; aminic acid; formylic acid | ||
| − | == | + | == Risks == |
| − | Combustible. Flash point = 69 C. Will corrode metals. | + | * Combustible. Flash point = 69 C. |
| − | + | * Will corrode metals. | |
| − | Inhalation and skin contact will cause irritation and burns. | + | * Inhalation and skin contact will cause irritation and burns. |
| − | + | * ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=A118P100&productDescription=FORMIC+ACID+ACS+100+ML&vendorId=VN00033897&countryCode=US&language=en SDS] | |
| − | ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=A118P100&productDescription=FORMIC+ACID+ACS+100+ML&vendorId=VN00033897&countryCode=US&language=en SDS] | ||
== Physical and Chemical Properties == | == Physical and Chemical Properties == | ||
| Line 29: | Line 28: | ||
|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 8.4 | + | | 8.4 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.220 | + | | 1.220 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 38: | Line 37: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 100.8 | + | | 100.8 C |
|} | |} | ||
Revision as of 13:06, 7 August 2022
Description
A colorless, fuming liquid with a strong pungent odor. Formic acid occurs naturally in the poison of stinging ants and in stinging nettles. In air, Formaldehyde will oxidize slowly to form formic acid. Formic acid is a strong reducing agent and will react quickly with most materials. It is deleterious to metals and may harm oil paintings, watercolors, drawing, and sketches. Formic acid is sold commercially as an aqueous solution. It is used industrially in animal feeds, textile dyeing, leather tanning and in the production of insecticides, rubber, and refrigerants. In textile dyeing, formic acid is used to assist in the absorption of Chromium mordants.
Synonyms and Related Terms
hydrogen carboxylic acid; methanoic acid; aminic acid; formylic acid
Risks
- Combustible. Flash point = 69 C.
- Will corrode metals.
- Inhalation and skin contact will cause irritation and burns.
- ThermoFisher: SDS
Physical and Chemical Properties
Miscible with water, ether, acetone, ethyl acetate, methanol, ethanol. Partially soluble in benzene, toluene, xylenes.
pH (0.1 N aqueous solution) = 2.3
| Composition | HCOOH |
|---|---|
| CAS | 64-18-6 |
| Melting Point | 8.4 C |
| Density | 1.220 g/ml |
| Molecular Weight | mol. wt. = 46 |
| Boiling Point | 100.8 C |
Comparisons
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry #4268
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
- S.R.Trotman, E.R. Trotman, Textile Analysis, J.B. Lippincott Company, Philadelphia, 1932 Comment: specific gravity = 1.241
- John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
- Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
- CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: pH (0.1 N aqueous solution) = 2.3