Dimercaprol: Difference between revisions

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(Created page with "{{ Plant | vcat = tall grass | aka = linseed | gs = Linum usitatissimum | taxonomy = | gr_area= cooler temperate regions | range=Global | fiber=yes }} Flax is useful in very many ways. The Latin species name ''usitatissimum'' means "most useful", pointing to the many traditional uses of the plant and their importance for human life. ==Uses== * The fibers are spun to make linen thread. * The seeds, separated and pressed, the seeds produce linseed oil. which is used f...")
 
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{{ Plant
{{Compound
| vcat = tall grass
|chemf=C3H8S2O|mm=124.225|
| aka = linseed
|density=1.229|mp=|bp=223.4|stp_p=liquid|stp_q=colorless, oily, smelly|sol_aq=87|nfpa_h=2|nfpa_f=1
| gs = Linum usitatissimum
|medicine=yes
| taxonomy =  
|medication=yes|listed_who=yes}}
| gr_area= cooler temperate regions
| range=Global
| fiber=yes
}}
Flax is useful in very many ways. The Latin species name ''usitatissimum'' means "most useful", pointing to the many traditional uses of the plant and their importance for human life.
==Uses==
==Uses==
* The fibers are spun to make [[linen]] thread.
===Primary===
* The seeds, separated and pressed, the seeds produce linseed oil. which is used for waterproofing cloth tarps. Because it oxidizes readily, it is also used as a paint substrate. Combined with cork, sawdust, and [[chalk]] and applied to a cloth backing, it forms linoleum, a waterproof floor surface known colloquially as '''linoleum'''.
* Chelation treatment for heavy metals including [[mercury]], [[bismuth]], [[chromium]], [[cobalt]], [[gold]], [[nickel]], [[lead]], antimony, cadmium, and arsenic
==Cultivation==
* WHO LEM
Wikipedia offers:
==Natural occurrence==
<blockquote>
* '''does not''' occur naturally
The soils most suitable for flax, besides the alluvial kind, are deep loams, and containing a large proportion of organic matter. Heavy clays are unsuitable, as are soils of a gravelly or dry sandy nature. Farming flax requires few fertilizers or pesticides. Within 8 weeks of sowing, the plant will reach 10–15 cm in height, and will grow several centimeters per day under its optimal growth conditions, reaching 70–80 cm within fifteen days.
==Hazards==
</blockquote>
* Toxic
==Production==
===Synthesis===
====dimercaprol====
# Combine [[2,3-dibromo propanol]] with '''sodium hydrosulfide'''
#: {{#Chem: C3H6Br2O + 2NaSH = CH2SH-CHSH-CH2OH + 2NaBr}}
 
====sodium hydrosulfide====
# Bubble [[hydrogen sulfide]] through a solution of [[sodium hydroxide]] which possibly contains some amount of solid sodium sulfide ({{#Chem: Na2S}}).
#: {{#Chem: H2S(g) + NaOH(aq) { = 130-150&deg;C } NaSH + H2O // gas can contain un-oxidized hydrocarbons in almost any amount }}<ref>{{Cite patent|2662000}}</ref>
#: {{#Chem: H2S(g) + Na2S(s) { H2O = 95-150&deg;C } 2NaSH(aq) }}<ref>{{cite patent|4439411}}</ref>
 
==Purification==
==Testing==
==Storage==
==Disposal==
==See Also==
==See Also==
===Text===
 
* [http://books.google.com/books?id=_F83AAAAYAAJ&dq=Gentleman%27s%20magazine%201742&pg=PA249#v=onepage&q&f=false The Produce Arising from one Acre of ground sown with flax-seed consider'd] at Google Books
==References==
<references/>

Latest revision as of 22:20, 4 December 2024

 
Dimercaprol
Chemical formula C3H8S2O
OTP appearance colorless, oily, smelly liquid 
Molar Mass(g/mol) 124.225 
Density(g/cc) 1.229 
Boiling Point(°C) 223.4 
Solubility in water(g/L) 87
NFPA 704
NFPA704.png
1
2
0
 

Uses

Primary

Natural occurrence

  • does not occur naturally

Hazards

  • Toxic

Production

Synthesis

dimercaprol

  1. Combine 2,3-dibromo propanol with sodium hydrosulfide
    C3H6Br2O + 2 NaSH → CH2SH-CHSH-CH2OH + 2 NaBr

sodium hydrosulfide

  1. Bubble hydrogen sulfide through a solution of sodium hydroxide which possibly contains some amount of solid sodium sulfide (Na2S).
    H2S(g) + NaOH(aq)
    {
    →
    130-150°C}
    NaSH + H2O // gas can contain un-oxidized hydrocarbons in almost any amount    [1]
    H2S(g) + Na2S(s)
    {H2O
    →
    95-150°C}
    2 NaSH(aq)    [2]

Purification

Testing

Storage

Disposal

See Also

References

  1. ↑ US patent 2662000
    Link courtesy Google
  2. ↑ US patent 4439411
    Link courtesy Google
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