Sodium hydroxide

English name

Caustic soda;Sodium hydrate;Sodium hydroxide

Product alias

Sodium hydroxide; Caustic soda; lye, caustic; sodium hydrate; soda lye; white caustic; caustic soda flakes; flake caustic; caustic soda solid; caustic soda pearls; solid caustic soda; Liquid Caustic Soda; Food Additives Sodium Hydroxide; Caustic soda flake; Solid Sodium hydroxide

Molecular formula

NaOH

Usage

It is basic chemical raw material. It is widely used in chemical, metallurgy, papermaking, petroleum, spinning and daily chemical and other departments.

CAS No.

1310-73-2

It has strong corrosive. It may cause soft scab if its solvent or powder spilled on skin. If it is spilled on skin, please flush with water immediately for 10 min. If it is spilled on eye, please flush with water or physiological saline for 15 min. Operating personnel work must wear work clothes and mask. Production workshop should be well ventilated.

S & T

The industrial solid sodium hydroxide should be packaged with iron barrel or other closed container. The net weight is 200kg. Sodium hydroxide 25kg. The ediable liquid sodium hydroxide or sodium hydroxide can by packaged with plastic barrel, which is in accordance with food packing standard. There should be clear "food additives" and "corrosive goods" marks on the packing. The dangerous gauge number is; 95001. It should be storaged in ventilated dry warehouse or cargo. The packing container should be complete and sealed. It is forbidden to storage and transport together with flammable and acids. It should avoid moisture and rain during the transport process.

Physico-chemical properties

This product is colorless transparent liquid. The relative density is 2.130. Melting point is 318.4oC. Boiling point is 1390oC. The sodium hydroxide sold on the market has solid and liquid two kinds. The solid sodium hydroxide is white. It has block, flake, bar, granular four types. The liquid sodium hydroxide is colorless transparent liquid. The solid sodium hydroxide has strong hygroscopicity. It is soluble in water, alcohol and glycerol. It is insoluble in acetone. It has strong corrosivity. It has corrosion effect on fiber, skin, glass and ceramics.

Quality standard

The industrial sodium hydroxide is in accordance with national standard GB 209-93; The industrial ion exchange method sodium hydroxide is in accordance with national standard GB/T 11199-89; Fiber sodium hydroxide is in accordance with national standard GB 11212-89; Food sodium hydroxide is in accordance with national standard GB 5175-85.

Molecular weight

40.00

Norm quota of consumption

Sodium carbonateCausticizing method Trona causticizing method
Sodium carbonate（Na₂CO₃ 100% Counted ） t/t 1.388 1.55～1.60
limestone(CaCO₃ 100% Counted ） t/t 1.550 1.800
Coke t/t 0.130 0.180
Steam t/t 7.000 7.80
Heavy oil t/t 0.250
Electricity kWh/t 70 150
Mercury method （Solid caustic soda） Diaphragm process（Solid caustic soda100%Counted）
Crude salt（NaCl 100 Counted ） t/t 1.602 1.606
Hydrochloric acid（HCl 31%) t/t 0.100 0.037
DC Electricity kWh/t 3027 2359
Driven electricity kWh/t 72 162
Steam t/t 0.395 5.009
Heavy oil t/t 0.224
Monopolar type Ion exchange method
One refined brine m3/t 166
Hydrochloric acid（HCl 31%) t/t 0.166
Sodium hydroxide（NaOH 100% Counted ） t/t 0.102
Pure water t/t 1.2
DC Electricity kWh/t 2164
Driven electricity kWh/t 15
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Japan Diaphragma method t/t Mercury method t/t
(95% NaOH Counted） （99% NaOH Counted ）
Crude salt（NaCl 90%) 1.830 1.830
Sodium carbonate（Na₂CO₃ 98%) 0.021 0.022
Hydrochloric acid（HCl 35%) 0.022 0.027
Sodium hydroxide（NaOH 97%) -- 0.043