2,3-Dimercapto-1-propanol
- Product Name
- 2,3-Dimercapto-1-propanol
- CAS No.
- 59-52-9
- Chemical Name
- 2,3-Dimercapto-1-propanol
- Synonyms
- BAL;DIMERCAPROL;2,3-DIMERCAPTOPROPAN-1-OL;BACS;BAL1;Parp9;Panobal;Antoxol;Dimersol;usafme-1
- CBNumber
- CB7684878
- Molecular Formula
- C3H8OS2
- Formula Weight
- 124.22
- MOL File
- 59-52-9.mol
2,3-Dimercapto-1-propanol Property
- Melting point:
- 77 °C
- Boiling point:
- 120 °C15 mm Hg(lit.)
- Density
- 1.239 g/mL at 25 °C(lit.)
- vapor density
- 4.3
- vapor pressure
- 7.4 hPa (100 °C)
- refractive index
- n20/D 1.573(lit.)
- Flash point:
- >230 °F
- storage temp.
- Store at +2°C to +8°C.
- solubility
- 87g/l (slow decomposition)
- form
- Liquid
- pka
- 9.00±0.25(Predicted)
- color
- Clear colorless to slightly yellow
- PH
- 5.0-6.5 (H2O, 20℃)(saturated solution)
- Odor
- pungent odor
- Water Solubility
- 87 g/L (25 ºC)
- Sensitive
- Air Sensitive
- Merck
- 14,3209
- BRN
- 1732058
- Stability:
- Stable. Combustible. Incompatible with strong oxidizing agents, many metals.
- CAS DataBase Reference
- 59-52-9(CAS DataBase Reference)
- NIST Chemistry Reference
- Dimercaprol(59-52-9)
- EPA Substance Registry System
- 2,3-Dimercaptopropanol (59-52-9)
Safety
- Hazard Codes
- Xn,Xi
- Risk Statements
- 22-36/37/38-36/38
- Safety Statements
- 26-36-24/25-23
- RIDADR
- UN 2810 6.1/PG 3
- WGK Germany
- 3
- RTECS
- UB2625000
- F
- 8-9-13-23
- TSCA
- Yes
- HazardClass
- 6.1
- PackingGroup
- III
- HS Code
- 29309070
- Hazardous Substances Data
- 59-52-9(Hazardous Substances Data)
- Toxicity
- LD50 i.m. in rats: 86.7 mg/kg (Zvirblis, Ellin)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H301Toxic if swalloed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 8.18757
- Product name
- 2,3-Dimercapto-1-propanol
- Purity
- for synthesis
- Packaging
- 2ML
- Price
- $148
- Updated
- 2024/03/01
- Product number
- 8.18757
- Product name
- 2,3-Dimercapto-1-propanol
- Purity
- for synthesis
- Packaging
- 5ml
- Price
- $175
- Updated
- 2024/03/01
- Product number
- 8.18757
- Product name
- 2,3-Dimercapto-1-propanol
- Purity
- for synthesis
- Packaging
- 25ML
- Price
- $672
- Updated
- 2024/03/01
- Product number
- 64046
- Product name
- 2,3-Dimercapto-1-propanol
- Purity
- ≥98% (iodometric)
- Packaging
- 10ml
- Price
- $281
- Updated
- 2024/03/01
- Product number
- 64046
- Product name
- 2,3-Dimercapto-1-propanol
- Purity
- ≥98% (iodometric)
- Packaging
- 6x10ml
- Price
- $1160
- Updated
- 2024/03/01
2,3-Dimercapto-1-propanol Chemical Properties,Usage,Production
Description
Dimercaprol (INN) or British anti - Lewisite (abbreviated BAL), is a compound developed by British biochemists at Oxford University during World War II . It was developed secretly as an antidote for lewisite, the now - obsolete arsenic - based chemical warfare agent . Today, it is used medically in treatment of arsenic, mercury , gold, lead, antimony, and other toxic metal poisoning . In addition , it has in the past been used for the treatment of Wilson's disease, a genetic disorder in which the body tends to retain copper.
Chemical Properties
colourless oily liquid with a typically offensive mercaptan smell
Originator
Bal,Hynson/Westcott,US,1944
Uses
BAL is a chelating agent used as an antidote for the treatment of metal poisoning, especially arsenic (organic and inorganic), gold salts, and inorganic mercury. BAL is more effective when given soon after toxic exposure because it is more effective in preventing inhibition of sulfhydryl enzymes than in reactivating them. BAL is also used in the treatment of Wilson’s disease. The drug cannot be used in poisonings due to iron, cadmium, tellurium, selenium, vanadium, and uranium. It is contraindicated in poisonings due to elemental mercury vapor, because it can further increase the metal in the brain.
Uses
British Anti-Lewisite. A chelator that inhibits sugar nucleotide degradation.2,3-Dimercaptopropanol is used as a chelating agent involved in the treatment of arsenic, antimony, lead, gold and mercury poisoning. It is also used as an antidote to the warfare agent Lewisite. Further, it is used for the treatment of Wilson's disease. In addition to this, it is used as an adjunct in the treatment of the acute encephalopathy of lead toxicity.
Uses
2,3-Dimercapto-1-propanol has been used in synthesizing novel (2-substituted phenyl-1,3-dithiolan-4-yl) methanol (PDTM) derivatives, which are potent tyrosinase inhibitors. It can also be considered for developing new drugs against AIDS due to its ability to inhibit HIV-1 tat activity.
Uses
chelating agent (As, Au, Hg antidote)
Definition
ChEBI: A dithiol that is propane-1,2-dithiol in which one of the methyl hydrogens is replaced by a hydroxy group. a chelating agent originally developed during World War II as an experimental antidote against the arsenic-based poison gas Lewisite, it has been use clinically since 1949 for the treatment of poisoning by arsenic, mercury and gold. It can also be used for treatment of poisoning by antimony, bismuth and possibly thallium, and (with sodium calcium edetate) in cases of acute leaad poisoning. Administrati n is by (painful) intramuscular injection of a suspension of dimercaprol in peanut oil, typically every 4 hours for 2-10 days depending on the toxicity. In the past, dimercaprol was also used for the treatment of Wilson's disease, a severely debilitating g netic disorder in which the body tends to retain copper, with resultant liver and brain injury.
Manufacturing Process
1,2-Dithioglycerol is prepared in the following manner: 1,537 parts of sodium
monosulfide nonahydrate and 411 parts of powdered sulfur are dissolved with
stirring in 1,345 parts of water. Magnesium hydroxide is precipitated in the
stirred sodium trisulfide solution by adding successively 97 parts of sodium
hydroxide dissolved in 180 parts of water and then slowly 246 parts of
magnesium chloride hexahydrate dissolved in 180 parts of water. The
magnesium hydroxide serves as a dispersing agent to maintain the resulting
sulfide polymer in finely divided condition. The mixture is heated and stirred
at 50°C while 1,329 parts of glycerol 1,2-dibromohydrin is added continuously
during a period of 1.5 hours. The reaction is exothermic and external cooling
is employed to maintain the temperature within the range of 50°-55°C. After
the addition of the dibromohydrin is complete, the mixture is stirred and
heated at 75°C for 6 hours.
The finely divided yellow sulfide polymer formed is then allowed to settle and
the reaction liquor is separated by decantation. The product is washed by
decantation five times with water and finally filtered by suction. The moist
cake of polymer is then air dried. The yield is 988 parts including
approximately 75 parts of magnesium hydroxide.
Thirty-two hundred fifty parts of the hydroxypropylene trisulfide containing
magnesium hydroxide is charged into a steel autoclave equipped with a
mechanical agitator. There is also charged into the autoclave 2,550 parts of
dry dioxane and 350 parts of cobalt trisulfide catalyst pasted with 700 parts of
dioxane. Hydrogen is charged into the autoclave to a pressure of 1,000 lb/in2
and the autoclave is heated to a temperature of 125°C during 1.5 hours,
agitation being employed during this operation. When the temperature
reaches about 110°C the pressure commences to drop and is kept between
the limits of 1,000 and 1,300 lb/in2 by the addition of hydrogen. When the
temperature reaches 125°C the pressure is raised to 1,700 lb/in2 with
hydrogen. The rate of hydrogenation increases as the temperature rises and
the process is about complete when a temperature of 125°C is reached.
After the hydrogen absorption ceases, the autoclave is cooled, vented, and
the reaction mixture is filtered to separate the catalyst. The filtrate is then
heated on a steam bath at 60-80 mm pressure to remove the dioxane. The
less volatile residue consists of 1,933 parts of crude dithioglycerol, a viscous
oil.
1,2-Dithioglycerol is isolated from the oil by distillation from an oil heated pot
through a short still. The distillation is carried out at a pressure of less than 1mm and at a bath temperature of 120°-175°C, the dithioglycerol distilling
over at a head temperature of 60°-65°C/0.2 mm or 75°-80°C/0.8 mm.
Starting from 550 parts of crude dithioglycerol, 340 parts of distillate is
obtained which contains 53% of mercapto sulfur and is nearly pure 1,2-
dithioglycerol. The overall yield of dithioglycerol from the glycerol
dibromohydrin is 48% of theoretical.
brand name
Bal (Akorn).
Therapeutic Function
Antidote (heavy metal)
Biological Functions
Arsenic and some other heavy metals act by chemically reacting with adjacent thiol residues on metabolic enzymes, creating a chelate complex that inhibits the affected enzyme's activity. Dimercaprol competes with the thiol groups for binding the metal ion, which is then excreted in the urine .
Dimercaprol is itself toxic, with a narrow therapeutic range and a tendency to concentrate arsenic in some organs. Other drawbacks include the need to administer it by painful intramuscular injection. Serious side effects include nephrotoxicity and hypertension.
Dimercaprol has been found to form stable chelates in vivo with many other toxic metals including inorganic mercury, antimony, bismuth, cadmium, chromium, cobalt, gold, and nickel. However, it is not necessarily the treatment of choice for toxicity to these metals. Dimercaprol has been used as an adjunct in the treatment of the acute encephalopathy of lead toxicity. It is a potentially toxic drug, and its use may be accompanied by multiple side effects. Although treatment with dimercaprol will increase the excretion of cadmium, there is a concomitant increase in renal cadmium concentration, so that its use in case of cadmium toxicity is to be avoided. It does, however, remove inorganic mercury from the kidneys; but is not useful in the treatment of alkylmercury or phenyl mercury toxicity. Dimercaprol also enhances the toxicity of selenium and tellurium, so it is not to be used to remove these elements from the body.
General Description
Clear colorless viscous liquid with a pungent offensive odor of mercaptans. Used as a medicine and an antidote to the chemical warfare agent LEWISITE.
Air & Water Reactions
Moderately soluble in water with decomposition [Hawley].
Reactivity Profile
2,3-Dimercapto-1-propanol forms highly stable chelates with a variety of metal ions. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid.
Fire Hazard
2,3-Dimercapto-1-propanol is probably combustible.
Pharmaceutical Applications
Dimercaprol (BAL) is a chelating agent used as an antidote for arsenic, antimony, bismuth, gold and mercury poisoning. It has the chemical name 2,3-dimercapto-1-propanol and is a clear, colourless or slightly yellow liquid.
Clinical Use
2,3-Dimercapto-1-propanol, BAL, or dithioglycerol is afoul-smelling, colorless liquid. It is soluble in water (1:20)and alcohol. It was developed by the British during WorldWar II as an antidote for “Lewisite,” hence the name Britishanti-Lewisite or BAL. Dimercaprol is effective topicallyand systematically as an antidote for poisoning caused byarsenic, antimony, mercury, gold, and lead. It can, therefore,also be used to treat arsenic and antimony toxicity associatedwith overdose or accidental ingestion of organoarsenicalsor organoantimonials.The antidotal properties of BAL are associated with theproperty of heavy metals to react with sulfhydryl (SH)groups in proteins (e.g., the enzyme pyruvate oxidase) andinterfere with their normal function. 1,2-Dithiol compoundssuch as BAL compete effectively with such proteins for themetal by reversibly forming metal ring compounds.These are relatively nontoxic, metabolically conjugated(as glucuronides), and rapidly excreted.BAL may be applied topically as an ointment or injectedintramuscularly as a 5% or 10% solution in peanut oil.
Safety Profile
Poison via ingestion, intramuscular, parenteral, intraperitoneal, and intravenous routes. Experimental teratogenic effects. Human systemic effects by intramuscular route: hemorrhage and dermatitis. Human blood and systemic skin effects by intramuscular route. It causes redness and swelling when applied locally to the skin, but does not produce blisters or ulcers. Intensely irritating to eyes and mucous membranes. Systemic symptoms are caused by injection. When heated to decomposition, it emits toxic fumes of SO,. Used as an antidote to arsenic, gold, and mercury poisoning.
Environmental Fate
BAL is believed to compete with tissue sulfhydryl groups and interferes with cellular respiration. It also competes with metallic cofactors of metabolic enzyme systems and increases capillary permeability. Metabolic degradation and excretion are essentially complete within 4 h. BAL not excreted as dimercaprol– metal complex is quickly metabolized by the liver and excreted as an inactive product in the urine. Because it is a lipophilic drug, it penetrates rapidly the intracellular spaces. The highest concentrations are found in the liver, kidneys, brain, and small intestine. Due to its lipophilic characteristic, the complexes formed with mercury and other metals may be redistributed into sensitive cells in the brain following dimercaprol treatment.
Purification Methods
Precipitate BAL as the Hg mercaptide [see Bj.berg Chem Ber 75 13 1942], regenerate with H2S, and distil it under a vacuum [Rosenblatt & Jean Anal Chem 951 1955]. It is an antidote for heavy metal (As, Hg, Au etc) poisoning. [Beilstein 1 IV 2770.]
Toxicity evaluation
BAL is a colorless or slightly yellowish viscous oily liquid and has a pungent odor. The molecular weight, melting point, boiling point, vapor pressure, and the octanol–water partition coefficient (log Kow) are 124.23, 77°C, 120°Cat 15 mm Hg, 4.36×103 mm Hg at 25°C, and 0.16, respectively. The Henry’s law constant is 9.39×109 atmm3 mol-1 at 25°C. BAL is soluble in ethanol and ether, and slightly soluble in chloroform and vegetable oils. Water solubility is 8.7 g/100 ml. BAL should be protected from light and should be stored at temperatures between 2 and 10°C in small vials.
2,3-Dimercapto-1-propanol Preparation Products And Raw materials
Raw materials
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View Lastest Price from 2,3-Dimercapto-1-propanol manufacturers
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- 2,3-Dimercapto-1-propanol 59-52-9
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