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Incompatible list

 

OXIDATIONSREMEDY OG REDUCTIONSREMEDY

ACID AND BASE

WATER SENSITIVE SUBSTANCE AND WATER

Unless the mixture process is under control, you should avoid mixture of: 

  • Oxidation remedy and reduction remedy
  • Acid and base
  • Water-sensitive substances and water

Remember that substance reactive can vary strongly according to particle size, impurity and moisture content. 

OXIDATIONSREMEDY OG REDUCTIONREMEDY



 

Examples of normal used oxidation remedy (easy reducible substance).
Free halogenes (chlor, brom and iod) Chrom sulphuric acid
Perchlorsyre and perchlorater

Smoking and konc. nitric acid

Periodacid and periodater Chromtrioxid
Chlorater Smoking and konc. sulphuric acid
Hypochloriter, bromiter Chlorsulfosyre

Peroxider, organic for instance:

Dibenzoylperoxid

m-chlorperbenzoacid

Peroxider, inorganic for instance:

Hydrogenperoxid (brintoverilte)

Natrium and bariumperoxid

Sodium sulphate 

Bleachwater Sulfurylchlorid
Permanganater Ozon
Mangandioxid ("brunsten") Nitrate
Dichromater Nitriter

 



Examples of normal used reductionremedy (easy oxidised substance).

Chlor hydrogen, chlorider Hydrazin(-hydrat, -sulfit)
Iod hydrogen, Iodider Metalsalt (ferro-, chromo-, stanno-)
Sulphur dioxide (svovlsyrling) Metals (litium, sodium, potassium, zinc)
Sulfiter

Phenoler (hydrokinon, pyrogallol)

Natriumdithionit ("natriumhydrosulfit") Aromatic amine (anilin, aminophenol)

Organic connection in general, particularly:

Methanol

Ethanol

Formaldehyde

Acetalaldehyd

Formic acid

Metalhydrider:

Sodium-,

Litium-,

Natriumbor-,

Lithiumaluminium


NB: Ethanol and concentrated or smoking nitric acid may not be used to cleaning of glasses because of the potentially explosive.

Acid and base

The warning particularly applies to concentrated acid and base.

The most common concentrated acid are:
Flusacid og liquid fluor hydrogen Chlorsulfonacid
Saltacid, conc. (smoking) Nitric acid, conc. og smoking
Perchloracid (chloroveracid, conc. Phosphoracid, conc., polyphosphoracid
Brom hydrogen acid, conc. Phosphorpentoxid (Phosphorsyreanhydrid)
Sulphuric acid, conc.

Eddikeacid, conc., ice ethanoic acid ~ 99 %

Sulphuric acid, smoking (olium) Ethanoic acid anhydrid
Sulphurictrioxid (Sulphuric acid anhydrid) formic acid, conc.



The most common concentrated bases are:
Natriumhydroxid, fixed ("kaustisk soda", "ætsnatron") Bariumhydroxid, fixed
Natriumhydroxid, 33% ("natronlud", "sæbesyrelud") Aminer (for instance triethylamin, 40 %; anilin)
Kaliumhydroxid, fixed ("kaustisk kali", ætskali") Ammonia, water free
Caliumoxid ("burned lime") Ammonia water, conc.
Caliumhydroxid ("hydrate lime") Hydrazin, hydrazinhydrat
Salt of weak, volatile acid as: Florider, sulfider, nitriter, cyanider and karbonater.

WATER SENSITIVE SUBSTANCES

Water-sensitive substances react with water, often generating a lot of heat and often generating gases. The substances must be poured slowly and carefully into the water and NEVER the other way around, when mixing. 

Examples of such substances are:

 

Develop hydrogen or hydrocarbon (for instance methan and butan) with water (explosion-, fire- and poisoning risk).

Alkalimetals (Li, Na, K, Rb, Cs)
Earthalkalimetals (Ca)
Methalhydrider (for instance LiH, NaH, CaH2, LiAlH4, NaAl(OR)2H2
Metalalkyler (for instance CH3Li, C4H9Li, CH3MgX)



Develop  inflammable, flammable or toxic volatile with water or diluted acid (explosion-, fire- and poisoning risk).

Carbides
Silicides
Phosfides
Sulphides
Tellurides
Selenides
Arsenides
Nitrides
Syrechlorides
Cyanides
Azides



Mixing or reacting with water causing large heat generation
Concentrated acid (sulphuric acid)

Acid anhydrides:(sulphurictrioxid, Phosphorpentoxid, vinegar acid anhydrid)

Syrechlorides: (thionylchlorid, sulfurylchlorid, phosphoroxychlorid, phosphortrichlorid, phosphorpentachlorid, stannichlorid, acetylchlorid, benzoylchlorid)
Water-free salts (aluminiumchlorid, ferrichlorid, calciumchlorid)
Concentrated bases (fixed alkalihydroxider, burned lime)


Be mixture poured the chemicals slowly and carefully in the water.

12978 / i31