Key details
| Standard packing | 500.00 Grams |
|---|---|
| Available pack sizes | 50 Gram, 100 Gram, 500 Gram, 1 Kg LR Grade Iodine |
| Supply locations | Iodine supplier and exporter from Mumbai, Kandla, Chennai, Kolkata, Visakhapatnam, Dubai, Sharjah, Abu Dhabi, Ajman, Fujairah, Muscat, Oman and We are also pioneer as a Iodine supplier in Turbhe, Pawane, Mahape, Rabale, Taloja, Navi Mumbai - MIDC. RX MARINE INTERNATIONAL is a leading Iodine derivatives manufacturer supplier in India. |
Need this product at your port or plant?
Enquire NowIodine solutions are typically standardized with Sodium Thiosulfate solutions or Arsenic Trioxide. The equation for reaction with Sodium Thiosulfate is:
I3- + 2 S2O32- → 3 I- + S4O62- (Dithionite ion)
See the Tech Tip under Arsenic Trioxide for information on standardization with Arsenic Trioxide.
In order to minimize errors due to oxidation of the Iodide to Iodine, titrations involving Iodine solutions should be made in the pH range of 4 - 8, and contact with air should be minimized. Because of this oxidation tendency as well as the volatility of this element even in the Triiodide form, Iodine solutions should be restandardized periodically for increased accuracy, especially after the bottle has been opened. Starch forms an intensely blue complex with Triiodide and is almost always used as the indicator when the endpoint is not determined instrumentally.
<p>
CASR No. : [7553 – 56 – 2]<br />
EC-No. : 231-442-4<br />
HS-No. : 2801 20 00<br />
RTECSNN1575000<br />
Poison class : CH ) 2<br />
Max. Allowable Concentration ( MAK ), Air : 1.1 mg / m3<br />
LD 50 oral rat : 14 mg / kg<br />
Packing category : G<br />
Road / Rail6.1 / 67 b<br />
IMDG-Code61 / II UN 3290<br />
IATA / DGR6.1 8 II UN 3290 CAO 615<br />
PAX 613<br />
Merck-Index10, 4881<br />
Mol. Formula : I2<br />
Mol. Weight253.81<br />
Specific Density, 20 0C4.93 g / cm3<br />
Bulk Density~ 2100 kg / m3<br />
Melting Range114 0C<br />
Boiling Point185 0C<br />
Vapour Pressure, 25 0C0.41 hPa<br />
Solubility in H2O, 20 0C29 mg per 100 ml<br />
pH value ( saturated solution, H2O, 20 0C )~ 5.4<br />
Atmospheric Susceptibilityslow sublimation</p>
Iodine solutions can also be used to determine Sulfite, Sulfur Dioxide, or Sulfide, according to the following reactions:
SO32- + I3- + H2O → SO42- + 2 H+ + 3 I-
SO2 + I3- + 2 H2O → SO42- + 4 H+ + 3 I-
S2- + I3- → S (precipitate) + 3 I-
In these reactions, it is better to add the Sulfite or Sulfide ion solution to an excess of acidified standard Iodine solution and then back-titrate the excess Iodine with standard Sodium Thiosulfate solution. This avoids loss of the analyte due to volatilization and thus leads to increased accuracy.
Related products
From our blog
Need Iodine AR for your operation?
Our team helps with product selection, dosage, safety data and delivery worldwide.
Request a Quote