سدیم دی کرومات دی هیدرات – sodium dichromate dihydrate
سدیم دی کرومات دی هیدرات – sodium dichromate dihydrate با فرمول شیمیایی Na2Cr2O7 یک ترکیب شیمیایی با جرم مولی 261.97 g/mol است. این ماده دارای مشخصات زیر است:
Properties | |
| sodium dichromate dihydrate | Products |
| Sodium bichromate, Sodium pyrochromate | Synonyms |
| ACS | Grade |
| 7789-12-0 | CAS No. |
| 234-190-3 | EC No. |
| 024-004-00-7 | EC-Index No. |
| Cr₂Na₂O₇*2H₂O | Hill Formula |
| Na₂Cr₂O₇ * 2 H₂O | Chemical Formula |
| 278 g/mol | Molar Mass (MM) |
| 2.52 g/cm3 (20 °C) | Density |
| 400 °C (1013 hPa) (decomposition) | Boiling Point (bp) |
| 356.7 °C (anhydrous substance) | Melting Point (mp) |
| – | Flash Point (fp) |
| – | Ignition Temprature |
| – | Explosion Limit |
| 3.5 (100 g/l, H₂O, 20 °C) | PH Value |
| 731.8 g/l | Solubility |
| Store at +2°C to +30°C. | Storage and Shipping Information |
| UN 3086 , 6.1 (5.1), II | Transport Information |
Oxidizing Toxic | Hazard Pictogram(s) |
| danger | Danger |
| H272: May intensify fire; oxidizer. H301: Toxic if swallowed. H312: Harmful in contact with skin. H314: Causes severe skin burns and eye damage. H317: May cause an allergic skin reaction. H330: Fatal if inhaled. H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled. H340: May cause genetic defects. H350: May cause cancer. H360FD: May damage fertility. May damage the unborn child. H372: Causes damage to organs through prolonged or repeated exposure if inhaled. H410: Very toxic to aquatic life with long lasting effects | Hazard Statement(s) |
| P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P260: Do not breathe dust/ fume/ gas/ mist/ vapours/ spray. P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection. P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. | Precautionary Statement(s) |
| 4–0–1-OX | NFPA diamond |
| Assay (iodometric): 99.5 – 100.5 % Identity: passes test Insoluble matter: ≤ 0.005 % Chloride (Cl): ≤ 0.002 % Sulfate (SO₄): ≤ 0.01 % Al (Aluminium): ≤ 0.002 % Ca (Calcium): ≤ 0.002 % Cu (Copper): ≤ 0.001 % Fe (Iron): ≤ 0.002 % K (Potassium): ≤ 0.01 % Mg (Magnesium): ≤ 0.005 % Pb (Lead): ≤ 0.002 % | specifications |
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