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Washing Soda: Soda Ash Crystallised from Hot Water
Lazar.zenit (Wikimedia Commons) · CC BY 4.0
Charlie

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Charlie

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Washing Soda: Soda Ash Crystallised from Hot Water

Washing soda is sodium carbonate crystallised with ten parts of water. George Fownes's chemistry manual (1856) makes it from soda ash: dissolve it in hot water, filter, and let it cool slowly; large clear crystals form. They turn to white powder in dry air, so keep them closed. The picture: sodium carbonate crystals grown on a slide, seen through crossed polarisers.
Oqalayo
A day with cooling

Imiyalelo

1

Dissolve the soda ash

Stir soda ash into hot water until no more dissolves. Fownes: the crystals dissolve in less than their own weight of boiling water.

Izinto zokwakha zalesi sinyathelo:

I-Sodium Carbonate (umlotha we-soda)I-Sodium Carbonate (umlotha we-soda)500 g
AmanziAmanzi1 ilitha

Amathuluzi adingekayo:

Isikali sesilinganisoIsikali sesilinganiso
Ibhikha LengilaziIbhikha Lengilazi
Ipuleti ElishisayoIpuleti Elishisayo
Izibuko Zokuchitheka KwamakhemikhaliIzibuko Zokuchitheka Kwamakhemikhali
Amagilavu erabhaAmagilavu erabha
2

Filter it hot

Filter the hot solution to take out the insoluble dirt of the soda ash.

Amathuluzi adingekayo:

Iphepha LokuhluzaIphepha Lokuhluza
Ifanela Lengilazi ElinomlomoIfanela Lengilazi Elinomlomo
Ibhikha LengilaziIbhikha Lengilazi
Izibuko Zokuchitheka KwamakhemikhaliIzibuko Zokuchitheka Kwamakhemikhali
Amagilavu erabhaAmagilavu erabha
3

Cool slowly

Pour it into a wide dish, cover it loosely and leave it to cool slowly. Large clear crystals grow.

Amathuluzi adingekayo:

Ipuleti LokuhwamukaIpuleti Lokuhwamuka
4

Drain and store closed

Pour off the liquor and drain the crystals. Store them in a closed jar: in dry air they lose water and crumble to white powder.

Amathuluzi adingekayo:

Ijeke LengilaziIjeke Lengilazi
Izibuko Zokuchitheka KwamakhemikhaliIzibuko Zokuchitheka Kwamakhemikhali
Amagilavu erabhaAmagilavu erabha
5

Soda ash to crystals

Ilayisha incwadi ye-Jupyter…
6

Limits

The method is Fownes's; the quantities are ours. Washing soda is alkaline and irritates eyes and skin.

Izinto

2

Amathuluzi Adingekayo

9

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Making Soda Ash by the Leblanc Process — The Chemical That Made Soap and Glass Affordable
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Making Soda Ash by the Leblanc Process — The Chemical That Made Soap and Glass Affordable

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