???? ? (???)
|
|
???? ? (???) ??
- ???
- 122 °C (lit.)
- ?? ?
- 140°C
- ?? ??
- 1400kg/m3
- ??
- d417 1.3875; d 1.42
- ???
- 7.6Pa at 25℃
- RTECS ??
- NN1269700
- ???
- 140°C
- ?? ??
- Store at +15°C to +25°C.
- ???
- soluble in Methanol, Water
- ??? ??
- ??
- ??? ??
- ??? ??
- ??
- ???? ?? ???
- ??????(pH)
- 1.2 (100g/l, H2O, 20℃)
- ???
- ?? ???? ?????.
- ??
- Moisture & Light Sensitive
- Merck
- 14,7171
- ???
- ?????? ?? ???. ??? ??? ???? ??? ??? ? ????. ???. ?? ??? ???? ??? ??? ??????.
- InChI
- 1S/H5IO6/c2-1(3,4,5,6)7/h(H5,2,3,4,5,6,7)
- InChIKey
- TWLXDPFBEPBAQB-UHFFFAOYSA-N
- SMILES
- OI(O)(O)(O)(O)=O
- CAS ??????
- 10450-60-9(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | C,O | ||
|---|---|---|---|
| ?? ???? ?? | 8-34 | ||
| ????? | 26-27-36/37/39-45-17-36 | ||
| ????(UN No.) | UN 3264 8/PG 2 | ||
| WGK ?? | 3 | ||
| F ?????? | 3-8 | ||
| TSCA | TSCA listed | ||
| HS ?? | 2811 19 80 | ||
| ?? ?? | 5.1 | ||
| ???? | II | ||
| ???? ??? | 5.1A - Strongly oxidizing hazardous materials | ||
| Hazard Classifications | Aquatic Acute 1 Aquatic Chronic 1 Eye Dam. 1 Ox. Sol. 1 Skin Corr. 1B STOT RE 1 Oral |
||
| ???? ?? | KE-27426 |
???? ? (???) C??? ??, ??, ??
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Periodic acid exists as colorless crystals, soluble in water and ethanol but slightly soluble in ether. Upon dehydration, it forms metaperiodic acid (HIO?). Further dehydration leads to decomposition, ultimately yielding iodine pentoxide (I?O?).??? ??
In dilute solution, periodic acid exists as H+ and IO4-. When more concentrated, orthoperiodic acid, H5IO6, is formed. Note that this compound is essentially a dihydrate, HIO4·2H2O. This can be obtained as a crystalline solid. O-periodic acid can be dehydrated to metaperiodic acid, m-HIO4. Further heating gives di-iodine pentoxide (I2O5) and O2. The anhydride di-iodine heptoxide, i.e. I2O7, does not exist in nature but can be formed synthetically.??
PERIODIC ACID is used as an oxidiser and in the determination of manganese.?? ??
A 100 g quantity of Ba?H?(IO?)? is moistened with 75 mL of H?O and treated with 200 mL of colorless nitric acid (HNO?). The mixture is agitated, heated to 60–70 °C for 1 h, and then cooled to 30–40 °C. The precipitated Ba(NO?)? is filtered off using a glass frit filter. The residue is washed free of periodate by stirring with concentrated HNO?. The combined filtrate is evaporated at 60–70 °C under aspirator vacuum (if additional Ba(NO?)? precipitates, it is removed by filtration, and evaporation continues) until H?IO? begins to crystallize. After cooling, colorless, glistening crystals of periodic acid (H?IO?) form. Due to the tendency of the solution to become supersaturated, prolonged waiting may be required. The crystals are collected by filtration and dried under vacuum at 50 °C. A second crop of crystals may be obtained by further evaporating the mother liquor.?? ??
Paraperiodic acid H5IO6, is obtained from sodium paraperiodate, formed by action of chlorine upon a NaOH solution containing I2. On vacuum drying, paraperiodic acid yields metaperiodic acid, HIO4, and dimesoperiodic acid, H4I2O9; which form heteropoly acids with a number of oxides and acids. The periodic acids and their salts are strong oxidizing agents both with inorganic and organic compounds.?? ??
Periodic acid (H5IO6) is an oxoacid of iodine. It is commonly used as an oxidizing agent in organic synthesis for the preparation of useful chemical intermediates. Periodic acid is also used in oxidative cleavage reactions.???? ? (???) ?? ?? ? ???
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?? ??
2-FLUORO-3-IODO-5-NITROPYRIDINE
S-METHYL-S-(4-METHOXYPHENYL) SULFOXIMINE
S-METHYL-S-(5-METHYLFURAN-2-YL) SULFOXIMINE
S-METHYL-S-(4-HYDROXYPHENYL) SULFOXIMINE
2-Fluoropyridine-5-boronic acid
S-METHYL-S-(2-THIAZYL) SULFOXIMINE
S-METHYL-S-(2-FLUOROYPHENYL) SULFOXIMINE
S-??-S-(4-?????)????
?????????
S-METHYL-S-(3-ACETAMIDOPHENYL) SULFOXIMINE
S-METHYL-S-(4-METHYLPHENYL) SULFOXIMINE
S-ETHYL-S-PHENYL SULFOXIMINE
???? ??
??? ?????
DIBENZYL SULFOXIDE
2-Fluoro-5-iodopyridine
S-METHYL-S-BENZYL SULFOXIMINE
2-METHOXY-6-METHYLBENZOIC ACID ETHYL ESTER
5-IODOCYTOSINE
2-Chloro-5-iodopyridine
S-METHYL-S-(4-FLUOROPHENYL) SULFOXIMINE
???? ? (???) ?? ??
???( 311)?? ??
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???? ? (???) ?? ??:
??? ????? ?? ????? ???? ? (???) ???????? (??)??????? ???? ?? ????? ??-?????
Lead dioxide
Sodium fluoride
SODIUM BISMUTHATE
Sodium iodate
LITHIUM PERIODATE
Ammonium periodate
BARIUM PERIODATE
PERIODIC ACID
POTASSIUM NICKEL(IV) PARAPERIODATE
TRIS[TRINITRATOCERIUM(IV)] PARAPERIODATE
SILVER PERIODATE
Potassium paraperiodate