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Sodium Hydroxide 10 % Solution: Lye Weighed into Water
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Charlie

14. Oktoba 2026DE
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Sodium Hydroxide 10 % Solution: Lye Weighed into Water

Many recipes call for caustic soda as a 10 % solution, not as solid lye: for scouring and mercerising cotton, soapmaking, cleaning metal before anodising. It is 100 g of sodium hydroxide in every 1,000 g of solution. Dissolving it gives off a lot of heat, so the lye goes into cold water slowly.
Mwanzo
Half an hour

Maagizo

1

Weigh

For 1 kg of solution weigh 100 g of solid lye and 900 g of cold water (see the notebook for other amounts).

Vifaa kwa hatua hii:

Kaustiki soda (hidroksidi ya sodiamu)Kaustiki soda (hidroksidi ya sodiamu)100 g
MajiMaji900 g

Zana zinazohitajika:

Mizani ya mizani-mbiliMizani ya mizani-mbili
Bikari ya BorosilikatiBikari ya Borosilikati
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
Glavu za mpiraGlavu za mpira
2

Lye into water, slowly

Add the lye to the water a little at a time, stirring, never water onto lye. It heats up strongly and can spit: goggles and gloves on.

Zana zinazohitajika:

Bikari ya BorosilikatiBikari ya Borosilikati
Fimbo ya Kioo ya KukorogaFimbo ya Kioo ya Kukoroga
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
Glavu za mpiraGlavu za mpira
3

Cool and bottle

Let it cool to room temperature and pour it into a labelled plastic bottle with a tight cap: lye slowly etches glass and takes up carbon dioxide from the air.

Zana zinazohitajika:

Chupa ya plastikiChupa ya plastiki
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
Glavu za mpiraGlavu za mpira
4

Weighing other amounts

Inapakia daftari la Jupyter…

Vifaa

2

Zana Zinazohitajika

6

Mchoro huu unatengeneza

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Kishikilia nafasi

Hidroksidi ya sodiamu, myeyusho wa asilimia 10

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Sodium Hydroxide by Causticizing Soda Ash with Slaked Lime

Sodium Hydroxide by Causticizing Soda Ash with Slaked Lime

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