Sodium tetraborate
- Sodium pyroborate
- Fused borax
- Disodium tetraborate, anhydrous
Sodium tetraborate | |
| |
| Formula | Na2B4O7 |
| Structure | |
| Description | White, odorless and crystalline, hygroscopic. |
| Uses | Manufacture of glass, enamels, & other ceramic products. |
| Registry Numbers and Inventories. | |
| CAS | 1330-43-4 |
| EC (EINECS/ELINCS) | 215-540-4 |
| EC Index Number | 005-007-00-2 |
| EC Safety Phrase | S 24/25 |
| RTECS | ED4588000 |
| RTECS class | Reproductive Effector |
| Merck | 12,8733 |
| Beilstein/Gmelin | 35010 (G) |
| EPA OPP | 11112 |
| Swiss Giftliste 1 | G-82384 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | B4Na2O7 |
| Formula mass | 201.22 |
| Melting point, °C | 742 |
| Boiling point, °C | 1575 |
| Vapor pressure, mmHg | 13 (1250 C) |
| Saturation Concentration | Approximately zero |
| Density | 2.38 g/cm3 |
| Solubility in water | 26 g/L |
| Thermal expansion | 0.00021/K |
| Hazards and Protection. | |
| Storage | Store in a cool, dry place. Keep container closed when not in use. |
| Handling | Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. |
| Protection | Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. |
| Respirators | Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. |
| Small spills/leaks | Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. |
| Disposal code | 14 |
| Stability | Stable under normal shipping and handling conditions. Stable under normal temperatures and pressures. |
| Incompatibilities | Incompatible with alkaloidol salts, mercuric chloride, zinc sulfate, and other metallic salts. Avoid contact with moisture. |
| Decomposition | Irritating and toxic fumes and gases, toxic fumes of sodium oxide, oxides of boron. |
| Fire. | ||||
| Fire fighting | Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Non-combustible, substance itself does not burn but may decompose upon heating to produce irritating, corrosive and/or toxic fumes. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. | |||
| Fire potential | Not flammable | |||
| NFPA | Health | 2 | ||
| Flammability | 0 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | TLV: ppm; 1 mg/m3 (as TWA) (ACGIH 1994-1995). |
| Poison_Class | 4 |
| Exposure effects | Significant ingestions or dermal exposures can be associated with weak, rapid pulse, cyanosis and abnormally low blood pressure. The patient may present with reduced body temperature, elevated body temperature or normal body temperature. Headache, lethargy, restlessness, weakness, CNS irritation, and/or seizures may occur with long term or repeated exposures. There is insufficient information concerning the reproductive effects of borates in humans. Adverse testicular effects and infertility have been reported in animals. <br>There have been limited animal studies which suggest decreased ovulation, fetotoxicity and developmental defects may occur with very high exposure levels. Maternal toxicity was present in some studies. |
| Ingestion | Symptoms may include: headache, excitement, fatigue, nausea, vomiting, stupor, and coma. May cause kidney damage. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. |
| Inhalation | Low hazard for usual industrial handling. |
| Skin | May cause skin irritation. Low hazard for usual industrial handling. |
| Eyes | Dust may cause mechanical irritation. |
First aid |
|
| Ingestion | Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. |
| Inhalation | Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. |
| Skin | Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. |
| Eyes | Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. |
| Transport. | ||
| HS Code | 2840 11 00 | |