Sodium Iodide (NaI) CAS 7681-82-5 Assay ≥99.0% (Titration) Factory CP2010 Standard

Ruifu Chemical is the leading manufacturer of Sodium Iodide (NaI) (CAS: 7681-82-5) with high quality, production capacity 100 tons per year, can meet the CP2010 / USP standard. Ruifu Chemical has been supplying Sodium Iodide more than 15 years and well received by domestic and foreign customers. Ruifu Chemical can provide worldwide delivery, competitive price, excellent service, small and bulk quantities available. Purchase Sodium Iodide, Please contact: alvin@ruifuchem.com

Package: Packaged in black-brown ground glass bottle, aluminium foil bag, 25kg/Cardboard Drum lined with two plastic bags, or according to customer's requirement.
Storage Condition: Keep the container tightly closed and store in a dark, cool, dry, well-ventilated warehouse away from incompatible substances. Hygroscopic and incompatible with strong acids, oxidizing agents, light, air and moisture sensitive. Protection against rain and sun exposure during transport. During loading and unloading, care should be taken. Vibration and impact are strictly prohibited to prevent breakage of packaging. In the event of a fire, it can be remedied with water, sand and various types of fire retardants. Toxicity and protection see iodine.
Shipping: Deliver to worldwide by air, by sea, by FedEx / DHL Express. Provide fast and reliable delivery. 

This product is calculated on dry basis, containing NaI not less than 99.0%.
Properties: This product is colorless crystal or white crystalline powder; Odorless, salty, taste slightly bitter; hygroscopic; It turns brown in humid air.  
This product is very soluble in water and soluble in ethanol.
Identification: The aqueous solution of this product shows the identification reaction of sodium salt and iodide (Appendix III).
Alkalinity: Take 1.0g of this product, add 10ml of water to dissolve, add 1 drop of phenolphthalein indicator solution and 0.10ml of sulfuric acid titration solution (0.05mol/L), and do not show red.
CIarity and color of the solution: Take 1.0g of this product, add 10ml of water and dissolve, the solution should be clear and colorless; If the color is displayed, it shall not be deeper than the yellow No. 1 standard colorimetric solution (the first method in Appendix IX A).
Chloride: Take 0.25g of this product, add 100ml of water to dissolve, add 1ml of concentrated hydrogen peroxide solution and phosphoric acid, boil until the solution is colorless, cool, add 0.5ml concentrated hydrogen peroxide solution, boil, cool, transfer to 250ml measuring bottle, add water to the scale, shake well; Take 5.0ml, check according to law (Appendix Ⅷ A), and compare with the control solution made of standard sodium chloride solution 2.5ml, not more concentrated (0.5%).
Sulfate: Take 0.50g of this product, check according to law (Appendix Ⅷ B), and compare with the control solution made of standard potassium sulfate solution 2.0ml, not more concentrated (0.04%).
Iodate: Take 0.5g of this product, add 10ml of newly boiled cold water to dissolve, add 2 drops of dilute sulfuric acid and 0.2ml of starch indicator solution, and place away from light, do not show blue within 2 minutes.
Loss on drying: Take this product, dry at 105℃ for 4 hours, the weight loss shall not exceed 3.0% (Appendix Ⅷ L).
Potassium salt: Take 1.0g of this product, place it in a 100ml measuring bottle, dissolve it with water and dilute it to the scale, shake well; Take 4.0ml, add 1.0ml dilute acetic acid, mix well, add 5.0ml sodium tetraphenylborate solution (1→30), shake immediately and leave for 10 minutes; If turbidity occurs, it should not be more dense (0.05%) when compared with potassium chloride solution (take 9.5mg potassium chloride, add the right amount of water to dissolve and dilute into 1000ml) 4.0ml with the control solution prepared by the method.
Barium salt: Take 1.0g of this product, add 20ml of water to dissolve, filter, the filtrate is divided into two equal parts: one part with dilute sulfuric acid 1ml, the other part with water 1ml, within 15 minutes, the two liquids should be similarly clarified.
Heavy metals: Take 2.0g of this product, add 23ml of water to dissolve, add 2ml of acetate buffer (pH 3.5), check according to law (Appendix Ⅷ H first method), containing heavy metals shall not exceed 10 parts per million.
Content determination: Take about 0.3g of this product, weigh it accurately, dissolve it with 10ml water, add 35ml hydrochloric acid, titrate with potassium iodate titration solution (0.05mol/L) until yellow, add 5ml chloroform, continue titrating, and strongly shake until the color of chloroform layer disappears. Each 1ml of potassium iodate titration solution (0.05mol/L) is equivalent to 14.99mg NaI.
Category: Iodine supplements.
Storage: Dark, sealed storage.

Sodium Iodide
NaI 149.89
Sodium iodide [7681-82-5].
DEFINITION
Sodium Iodide contains NLT 99.0% and NMT 101.5% of NaI, calculated on the anhydrous basis.
IDENTIFICATION
• A. Identification Tests-General, Sodium <191>
Sample solution: 50 mg/mL
Acceptance criteria: Meets the requirements
• B. Identification Tests-General, Iodide <191>
Sample solution: 50 mg/mL
Acceptance criteria: Meets the requirements
ASSAY
• Procedure
Sample: 500 mg
Analysis: Dissolve the Sample in 10 mL of water. Add 35 mL of hydrochloric acid, and titrate with 0.05 M potassium iodate VS until the dark brown solution that is produced becomes pale brown. Add 1 mL of amaranth TS, and continue the titration slowly until the red color just changes to yellow. Each mL of 0.05 M potassium iodate is equivalent to 14.99 mg of NaI.
Acceptance criteria: 99.0%-101.5% on the anhydrous basis
IMPURITIES
• Iodate
Iodate solution: Dilute 1 mL of potassium iodate solution (1 in 2500) with water to 100 mL.
Standard solution: Dissolve 100 mg of Sodium Iodide in ammonia- and carbon dioxide-free water and add 1 mL of Iodate solution to obtain 10 mL of solution. Transfer to a color-comparison tube.
Sample solution: Dissolve 1.1 g in sufficient ammonia- and carbon dioxide-free water to obtain 10 mL of solution. Transfer to a color-comparison tube.
Analysis: To each color comparison tube add 1 mL of starch TS and 0.25 mL of 1.0 N sulfuric acid, and mix.
Acceptance criteria: Any color produced in the Sample solution does not exceed that in the Standard solution (NMT 4 ppm).
• Thiosulfate and Barium
Sample solution: Dissolve 0.5 g in 10 mL of ammonia- and carbon dioxide-free water.
Analysis: Add 2 drops of 2 N sulfuric acid to the Sample solution.
Acceptance criteria: No turbidity develops within 1 min.
• Potassium
Sample solution: Dissolve 1.0 g in 2 mL of water.
Acceptance criteria: The Sample solution yields no precipitate with 1.0 mL of sodium bitartrate TS.
• Limit of Nitrate, Nitrite, and Ammonia
Sample solution: Dissolve 1.0 g in 5 mL of water.
Analysis: To the Sample solution contained in a test tube of 40-mL capacity add 5 mL of 1 N sodium hydroxide and about 200 mg of aluminum wire. Insert a pledget of purified cotton in the upper portion of the test tube, and place a piece of moistened red litmus paper over the mouth of the tube. Heat the test tube and its contents on a steam bath for 15 min.
Acceptance criteria: No blue coloration of the paper is discernible.
• Heavy Metals <231>
Sample solution: Dissolve 2.0 g in 25 mL of water.
Acceptance criteria: NMT 10 ppm
SPECIFIC TESTS
• Alkalinity
Sample solution: Dissolve 1.0 g in 10 mL of water.
Analysis: Add 0.15 mL of 0.10 N sulfuric acid and 1 drop of phenolphthalein TS to the Sample solution.
Acceptance criteria: No red color is produced.
• Water Determination, Method I <921>: NMT 2.0%
ADDITIONAL REQUIREMENTS
• Packaging and Storage: Preserve in tight containers.

How to Purchase? Please contact Dr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com 

15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals.

Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc.

Advantages? Superior quality, affordable price, professional services and technical support, fast delivery.

Quality Assurance? Strict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc.

Samples? Most products provide free samples for quality evaluation, shipping cost should be paid by customers.

Factory Audit? Factory audit welcome. Please make an appointment in advance.

MOQ? No MOQ. Small order is acceptable.

Delivery Time? If within stock, three days delivery guaranteed.

Transportation? By Express (FedEx, DHL), by Air, by Sea.

Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.

Custom Synthesis? Can provide custom synthesis services to best fit your research needs.

Payment Terms? Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc. 

Risk Codes
R36/38 - Irritating to eyes and skin.
R36/37/38 - Irritating to eyes, respiratory system and skin.
R50 - Very Toxic to aquatic organisms
Safety Description
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 3077 9 / PGIII
WGK Germany 1
RTECS WB6475000
FLUKA BRAND F CODES 8
TSCA Yes
HS Code 2827600000

Sodium Iodide (NaI) (CAS: 7681-82-5), is an inorganic compound of sodium and iodine with the molecular formula NaI. White crystal or white crystalline powder. Melting point 651℃; Boiling point 1034℃. Sodium Iodide is soluble in water, ethanol, and acetone but insoluble in benzene, chloroform, and ether. It forms a triiodide complex when dissolved in water. Sodium iodide is a stable compound and does not decompose at normal temperatures. It is reductive and can be oxidized by a general oxidant to free iodine. With deliquescence, in the wet air to absorb moisture and caking. In contact with air, it gradually decomposes and precipitates iodine, which gradually turns brown.  

Sodium Iodide (NaI) (CAS: 7681-82-5) is used to treat and prevent iodine deficiency commonly.
Used as a raw material for the manufacture of inorganic iodides and organic iodides.
Used as chemical materials, medicine, photosensitive material and analytic reagent, etc.
Auxiliaries and other medicinal chemicals, pharmaceutical.
Used as analytical reagents, in the manufacture of disinfectants, antiseptics, deodorants and medicines.
Used as a raw material for producing an inorganic electrochemical compound.
Used in medicine as an expectorant and diuretic, and also in the treatment of goiter disease.
Trace determination of cesium, platinum and thallium, etc. A cosolvent of iodine. A photograph. Radiation scintillation detector.
Used as X-ray contrast agent in medicine, it can be used for cystography, retrograde urography, T-tube cholangiography, etc.
In medicine, it is used as thyroid tumor prevention agent, expectorant and diuretic, food additive and photoreceptor.
It is commonly used as a source of iodine for iodizing table salt.
Used in various industrial applications such as photography, radiography, and scintigraphy.
Sodium Iodide is also used in nuclear medicine as a diagnostic agent for cancer detection.
Sodium Iodide is also used in the treatment of hyperthyroidism, a condition where the thyroid gland produces too much thyroid hormone.
Sodium Iodide is a hygroscopic material, meaning it absorbs moisture from the air.
Sodium Iodide is also used in photographic film photosensitizer, iodine cosolvent, iodine emulsion preparation and pharmaceutical industry.