1703-58-8 Usage
Description
1,2,3,4-Butanetetracarboxylic acid (BTCA) is a white, leaf-shaped or needle-shaped crystalline compound that is soluble in water and ethanol. It has a melting point of 236-237℃ for the dextrorotatory-levorotatory type and 189℃ for the endocyclic type. BTCA exhibits minimal hygroscopicity and maintains its purity over an extended period.
Uses
Used in Textile Industry:
1,2,3,4-Butanetetracarboxylic acid is used as a formaldehyde-free durable press (DP) finishing agent for cotton, hemp, silk, and other cellulosic fibers. It serves as an anti-wrinkle and anti-shrink agent, improving the shaping effect of fabrics without the presence of formaldehyde. When catalyzed by sodium hypophosphite (SHP), BTCA enhances the anti-wrinkle properties of cotton fabrics, although it may cause significant strength losses due to cross-linking and acidic degradation of cellulose.
Used in Cotton Cellulose Preparation:
1,2,3,4-Butanetetracarboxylic acid is utilized as a cross-linking agent to enhance the anti-prilling and flame retardant properties of cotton cellulose. It also acts as a spacer in the cross-linking of titania nanoparticles to cotton, further improving the fabric's performance.
Used as a Nonformaldehyde Durable Press Finishing Agent:
BTCA is employed in the textile industry as a nonformaldehyde alternative for durable press finishing, offering a safer and more environmentally friendly option for fabric treatment.
Preparation
1,2,3,4-butanetetracarboxylic acid is obtained by oxidation of tetrahydrophthalic anhydride.1,2,3,4-butanetetracarboxylic acid is prepared by oxidative cleavage of tetraphthalic acid or anhydride by oxidation with ozone-containing gas, followed by oxygen-containing gas, with the mixture then being heated with a peroxide, e.g. H2 O2, at 100° C. to produce the butanetetracarboxylic acid.Process for preparing 1,2,3,4-butanetetracarboxylic acid
Air & Water Reactions
Soluble in water.
Reactivity Profile
1,2,3,4-Butanetetracarboxylic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 1,2,3,4-Butanetetracarboxylic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition 1,2,3,4-Butanetetracarboxylic acid emits acrid smoke and irritating fumes.
Fire Hazard
Flash point data for 1,2,3,4-Butanetetracarboxylic acid are not available; however, 1,2,3,4-Butanetetracarboxylic acid is probably combustible.
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 1703-58-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,0 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1703-58:
(6*1)+(5*7)+(4*0)+(3*3)+(2*5)+(1*8)=68
68 % 10 = 8
So 1703-58-8 is a valid CAS Registry Number.
InChI:InChI=1/C8H10O8/c9-5(10)1-3(7(13)14)4(8(15)16)2-6(11)12/h3-4H,1-2H2,(H,9,10)(H,11,12)(H,13,14)(H,15,16)/p-4/t3-,4-/m0/s1
