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| Name | Potassium hydroxide |
| Synonyms | POTASH POTASH LYE POTASH CAUSTIC POTASSIUM HYDRATE POTASSIUM HYDROXIDE Potassium hydroxide POTASSIUM HYDROXIDE STANDARD hydroxydedepotassium(solide) POTASSIUM HYDROXIDE ETHANOLIC |
| CAS | 1310-58-3 71769-53-4 |
| EINECS | 215-181-3 |
| InChI | InChI=1/K.H2O/h;1H2/q+1 |
| InChIKey | KWYUFKZDYYNOTN-UHFFFAOYSA-M |
| Molecular Formula | KOH |
| Molar Mass | 56.11 |
| Density | 1.450g/mLat 20°C |
| Melting Point | 361 °C (lit.) |
| Boling Point | 1320°C |
| Flash Point | 52°F |
| Water Solubility | soluble |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Vapor Presure | 1 mm Hg ( 719 °C) |
| Appearance | powder |
| Specific Gravity | 1.09 |
| Color | white |
| Odor | Odorless |
| Exposure Limit | Ceiling in air 2 mg/m3 (ACGIH). |
| Merck | 14,7640 |
| PH | 10.98(1 mM solution);11.95(10 mM solution);12.88(100 mM solution); |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable, but very hygroscopic. Dissolves exothermically in water. Incompatible with most metals, strong acids, acid chlorides, organic materials, zinc, aluminium, nitroalkanes, nitrobenzene, chlorine d |
| Sensitive | Air Sensitive & Hygroscopic |
| Explosive Limit | 3.5-15.0%(V) (ethanol) |
| Refractive Index | n20/D 1.421 |
| Physical and Chemical Properties |
white orthorhombic crystal, industrial products are white or light gray block or bar.
melting point 360.4 ºC boiling point 1320~1324 ºC relative density 2.044(20 ºC) soluble in water, soluble in ethanol, slightly soluble in ether. |
| Use | Basic chemical raw materials, used in medicine, daily chemical industry. |
| Risk Codes | R34 - Causes burns R35 - Causes severe burns R22 - Harmful if swallowed R11 - Highly Flammable R39/23/24/25 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R36/38 - Irritating to eyes and skin. R36/37 - Irritating to eyes and respiratory system. R67 - Vapors may cause drowsiness and dizziness R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S7 - Keep container tightly closed. S16 - Keep away from sources of ignition. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 2924 3/PG 2 |
| WGK Germany | 1 |
| RTECS | TT2100000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 28259090 |
| Hazard Class | 8 |
| Packing Group | II |
| Toxicity | LD50 orally in rats: 1.23 g/kg (Smyth) |
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