Soda technical
Application
Technical soda ash (sodium carbonate) is for chemical, glass, electronics, paper and other industries.
Depending on the purpose of technical soda ash it is manufactured in grades A and B. Grade A product is used to produce diode glass and other purposes, B grade — chemical, glass and other industries.
Safety requirements
Technical soda ash is a substance of third risk class.
Packing
Technical grade A soda ash is packed in special soft disposable containers, four-,
Guaranteed shelf life
Product grade A — 3 months, B grade — 6 months from the date of manufacture of the product, packaged in a special soft containers — 5 years from date of manufacture.
| Item | Norm | |||||
| A | B | |||||
| Premium | First | Second | Premium | First | Second | |
| Appearance | White pellets | White powder | ||||
| Mass fraction of sodium carbonate, %, not less | 99.4 | 99.0 | 98.5 | 99.4 | 99.0 | 99.0 |
| Mass fraction of sodium carbonate in terms of non-calcined product, %, not less | 98.7 | 98.2 | 97.0 | 98.9 | 98.2 | 97.5 |
| Mass fraction of the loss on ignition at 270-300 °C, %, not more | 0.7 | 0.8 | 1.5 | 0.5 | 0.8 | 1.5 |
| Mass fraction of chlorides as NaCl, %, not more | 0.2 | 0.5 | 0.8 | 0.4 | 0.5 | 0.8 |
| Total iron as Fe2O2, %, not more | 0.003 | 0.005 | 0.008 | 0.003 | 0.003 | 0.008 |
| Mass fraction of water-insoluble substances, %, not more | 0.04 | 0.04 | 0.08 | 0.03 | 0.04 | 0.08 |
| Mass fraction of sulfate in terms of Na2SO4, %, not more | 0.04 | 0.05 | — | 0.04 | 0.05 | — |
| Bulk density, g/cm³, not less | 1.1 | 0.9 | 0.9 | — | — | — |
| Particle size:
residue on sieve number 2R GOST 6613-86. %, not more passing through a sieve with mesh № 1. 25K GOST 6613-86. %, not more residue on sieve № 1K GOST 6613-86. %, not more passing through a sieve the mesh number 01K, 25K GOST 6613-86. %, not more |
— 100 3 7 |
5 — — 15 |
5 — — 25 |
— — — — |
— — — — |
— — — — |
| Magnetic inclusions larger than 0.25 mm | The absence | — | — | — | — | — |
| Class of danger | — |
| Basic properties and hazards | |
| Basic properties | Granules or white powder, soluble in water. |
| Explosion and fire | Will Not explode, |
| The risk to humans | Inhalation of dust may cause respiratory tract irritation and conjunctivitis. After prolonged use with solutions eczema is possible. A concentrated solution in contact with the eyes can cause burns, neurosis, and later — clouding of the cornea. Caustic when wet. |
| Individual protection means | Respirator type |