Molecular Formula | CaHNaO2 |
Molar Mass | 96.07 |
Water Solubility | Soluble in water. |
Appearance | pellets |
Color | White |
Exposure Limit | ACGIH: TWA 5 mg/m3OSHA: TWA 15 mg/m3; TWA 5 mg/m3NIOSH: TWA 5 mg/m3 |
Merck | 14,8569 |
Storage Condition | no restrictions. |
Stability | Stable. Incompatible with acids, water, fluorine, chloroform, trichloroethylene. |
Sensitive | Air & Moisture Sensitive |
Use | Used as a desiccant and absorbent for carbon dioxide |
Hazard Symbols | C - Corrosive |
Risk Codes | R34 - Causes burns R35 - Causes severe burns R37 - Irritating to the respiratory system |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
UN IDs | UN 1907 8/PG 3 |
WGK Germany | 1 |
TSCA | Yes |
HS Code | 28259090 |
Hazard Class | 8 |
Packing Group | III |
Raw Materials | Sodium hydroxide |
This product is a mixture of calcium hydroxide and sodium hydroxide (or potassium hydroxide).
This product is white or gray-white particles, or particles containing a colored indicator to show the product's carbon dioxide absorption.
above (3), (4) two items can be done one.
take about 0982g of this product, according to the particle size and particle size distribution determination method (general rule the second method of double sieving method) inspection, does not pass the part of the sieve with a pore size of shall not exceed 1%;
The Part passing through the drug sieve with a diameter of 0.45mmtake about 20g of this product, place it in a 19cm X 10.cm X 5cm aluminum box, add 20 pieces of steel balls with a diameter of 7.9mm, and move on the plate at a speed of two times per second, the moving distance is 26cm (including the length of the cassette is 19cm), and the moving time is 3 minutes. The steel ball is taken out and sieved with a sieve with a diameter of 80%.
take about 10g of this product, place it in a weighing bottle with a diameter of about 50mm and a height of 30mm, weigh it accurately, open the lid, and store 14% (m1/ml) sulfuric acid solution in the dryer, placed for 24 hours, the increase in weight should not exceed 7.5%.
take a dry U-shaped glass tube with an inner diameter of about 15mm and a height of 15cxn. After the lower end is loosely filled with dry cotton, add about 5g of dry calcium chloride to one arm of the tube, precision weighing; Add about 10g of this product to the other arm, and then weigh it accurately; Plug each hole in the pipe mouth and 1 glass tube in each hole, connect the glass tube on the arm of this product with another glass tube storing dry calcium chloride, pass the carbon dioxide gas through the calcium chloride product at a speed of 75ml per minute, and cool to room temperature after 20 minutes, the added weight shall not be less than 19.0% of the weight of the test article.
take this product, dry at 105°C for 2 hours, the weight loss should be 10.0% ~ 15.0% (General 0831).
pharmaceutical excipients, carbon dioxide absorbent.
sealed storage.
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Use | as analytical reagent and carbon dioxide absorbent as desiccant and carbon dioxide absorbent carbon dioxide absorbent, determination of carbon, desiccant. Pharmaceutical grade is used in professional anesthesia circulatory system and respiratory therapy equipment. CO2 was removed. It can also be used in diving and industrial fields. |
production method | analytically pure calcium carbonate was burned at 900oC to make fresh calcium oxide. A digestion reaction was carried out by adding a transparent aqueous sodium hydroxide solution (pure grade) having a relative density of 1.13 under vigorous stirring, and the ratio of calcium hydroxide to the aqueous sodium hydroxide solution was controlled to be 70g:65ml. After the end of the digestion reaction, it is dried at 200-250OC, crushed and sieved, which is the finished product. |
category | corrosive article |
flammability hazard characteristics | and toxic ammonia generation from ammonia salts |
storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from acid and ammonia salt |
extinguishing agent | dry sand, dry powder, carbon dioxide |