Caustic soda (technical / granulated )
TECHNICAL GRADE SODIUM HYDROXIDE
CAUSTIC SODA (GOST 2263-79)
Technical grade sodium hydroxide (NaOH) is designated for chemistry, oil chemistry, cellulose and paper industry, non-ferrous metallurgy and other sectors of economy.
Technical grade sodium hydroxide is produced of the following grades:
TR– solid mercury (flaky);
TD– solid diaphragmatic (melted);
RR– mercury solution;
RCH– chemical solution;
RD– diaphragmatic solutions.
In terms of physical-chemical properties the technical grade granulated sodium hydroxide must meet the following standards:
|
Parameter |
Brand and sort standard |
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|
TR |
TD |
RD |
|||
|
Highest |
First |
||||
|
1 |
Appearance |
Flaky mass |
Melted mass |
Colourless or coloured liquid |
|
|
White colour. A small shade is permissible |
Crystallized sediments are permissible |
||||
|
2 |
Sodium hydroxide mass fraction, % no less than |
98,5 |
94,0 |
46,0 |
44,0 |
|
3 |
Sodium carbonate mass fraction, %, no more than |
0,8 |
1,0 |
0,6 |
0,8 |
|
4 |
Sodium chloride mass fraction, %, no more than |
0,05 |
3,5 |
3,0 |
3,8 |
|
5 |
Iron mass fraction, converted into Fe2O3, %, no more than |
0,004 |
0,03 |
0,007 |
0,02 |
|
6 |
Sum of iron, aluminium and manganese oxide mass fractions, %, no more than |
0,02 |
- |
- |
- |
|
7 |
Silicon acid mass fraction, converted into SiO2, %, no more than |
0,02 |
- |
- |
- |
|
8 |
Sodium sulphate mass fraction, %, no more than |
0,03 |
0,4 |
- |
- |
|
9 |
Sum of calcium and manganese mass fractions, converted into Ca, %, no more than |
0,01 |
- |
- |
- |
|
10 |
Sodium hypochlorite, %, no more than |
0,01 |
0,06 |
0,25 |
0,30 |
|
11 |
Mercury mass fraction, %, no more than |
0,0005 |
- |
0,0001 |
- |
Liquid products are poured into specially designated railway tanks, auto containers. At the client’s request the product may be poured into 100-275 dm3 welded steel barrels. Solid products may be packed into steel drums. With the client’s approval, flaky solid product may be packaged into glass or polyethylene containers with a net mass of 2-3 kg . Liquid products are stored in closed alkali resistant containers; solid products are stored packaged in closed non-heated warehousing premises . Warranty storage time - 1 year after manufacture.
GRANULATED SODIUM HYDROXIDE
TU 6-01-1306-85
Technical grade granulated sodium hydroxide, NaOH, is used in chemistry, gas, metallurgy, oil chemistry and other sectors of economy.
Production of two-brand technical grade granulated sodium hydroxide is intended:
GR - granulated mercury;
GD - granulated diaphragmatic.
According to physical -chemical properties, technical-grade sodium hydroxide must meet the following standards:
|
Parameter |
Brand and grade standard |
|||
|
GR |
GD |
|||
|
Highest |
First |
|||
|
1 |
Appearance | Spherical or semi-spherical form white granules; a shade is permissible | ||
|
2 |
Sodium hydroxide mass fraction, %, no less than |
98,8 |
98,5 |
94,5 |
|
3 |
Sodium carbonate mass fraction, %, no more than |
0,6 |
1,0 |
2,7 |
|
4 |
Sodium chloride mass fraction, %, no more than |
0,01 |
0,01 |
2,0 |
|
5 |
Sodium sulphate mass fraction, %, no more than |
0,005 |
0,005 |
0,01 |
|
6 |
Iron mass fraction, converted into Fe2O3, %, no more than |
0,002 |
0,004 |
0,03 |
|
7 |
Mercury mass fraction, %, no more than |
0,0001 |
0,0001 |
- |
PACKAGING: Liquid product is poured into specially designated railway tanks, auto containers, 50-60 dm3 welded steel barrels of 50-60 dm3 Technical grade granulated sodium hydroxide is packed into valve polyethylene two-layer bag, also into valve humidity-resistant, closed, with a fabric laminated bags for powdery chemical products. Technical grade granulated sodium hydroxide is stored in closed warehousing premises, in stacks up to 3 m high. If stored in heated warehousing premises, bags with sodium hydroxide are arranged at a distance of 1 metre from heating devices. Warranty storage time - 1 year after manufacture.
