Pharmacopoeia of Alkaline Iodide (Mercury) Potassium Mercury Test Solution

Beijing Huakesheng Fine Chemical Products Trading Co., Ltd. produces and sellsPharmacopoeia of Alkaline Iodide (Mercury) Potassium Mercury Test SolutionNessler reagent refers to a reagent that uses the principle of UV visible spectrophotometry to determine the content of ammonia nitrogen in air and water.

Chinese name: Nessler's reagent

外文名 Nessler

The meaning refers to a method of utilizing ultraviolet visible spectrophotometry

Characteristics: A transparent solution that appears slightly light yellow green at room temperature. As the exposure time increases, a yellow brown precipitate gradually forms, and the solution gradually turns yellow. The reaction mechanism is that iodine ions and mercury ions react with ammonia under strong alkaline conditions to form a light reddish brown complex, which has strong absorption at a wavelength of 420nm. The absorbance of the generated reddish brown complex is directly proportional to the ammonia nitrogen content of its solution, and the ammonia nitrogen content can be determined by testing the absorption value of the reaction solution.

Physical and chemical properties

[Density]: 1.16 g/mL at 20 ℃

: 120-127 ℃ (lit.)

: HgI4K ₂

: 786.40400

:>230 ℉

: 787.51600

[ LogP ]：3.54030

[Appearance]: Light yellow liquid

:

Keep the storage container sealed

Put it in a tight storage container and store it in a cool, dry place

[Stability]:

If used and stored according to specifications, it will not decompose

Avoid contact with oxides, moisture/dampness

:

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 1

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: None

6. Topological molecule polarity surface area 0

7. Number of heavy atoms: 7

8. Surface charge: 0

9. Complexity: 19.1

10. Number of isotopic atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 3

[More]:

1. Characteristic: undetermined

2. Density (g/mL 25 ℃): 1.16

3. Relative vapor density (g/mL, air=1): not determined

4. Melting point (℃): 120-127

5. Boiling point (℃, atmospheric pressure): undetermined

6. Boiling point (℃, 5.2kPa): undetermined

7. Refractive index (n20/D): undetermined

8. Flash point (℃,): undetermined

9. Specific rotation (º): not determined

10. Spontaneous combustion point or ignition temperature (℃): not determined

11. Vapor pressure (kPa, 25 ℃): not determined

12. Saturated vapor pressure (kPa, 60 ℃): not determined

13. Combustion heat (KJ/mol): undetermined

14. Critical temperature (℃): undetermined

15. Critical pressure (KPa): undetermined

16. Logarithmic value of oil-water (octanol/water) partition coefficient (25 ℃): undetermined

17. Explosion upper limit (%, V/V): undetermined

18. Lower explosive limit (%, V/V): not determined

19. Solubility (mg/mL): Easily soluble in water, soluble in alcohols, acetone, and ethers.Pharmacopoeia of Alkaline Iodide (Mercury) Potassium Mercury Test Solution

Safety Information

[ 符号 ]：GHS05, GHS06, GHS08, GHS09

: Danger

: H290-H300+H310-H314-H331-H373-H410

: P261-P273-P280-P301+P310+P330-P303+P361+P353-P305+P351+P338

[ 个人防护装备 ]： Faceshields; full-face respirator (US); Gloves; Goggles; multi-purpose combination respirator cartridge (US); type ABEK (EN14387) respirator filter

[Hazard Code (Europe)]: T+: Verytoxic; C:Corrosive;

[Risk Statement (Europe)]: R26/27/28; R33; R35

[Safety Declaration (Europe)]: 45-36/37-61-36/37/39-28-26-60-13

[Dangerous Goods Transport Code]: UN 3287 6.1/PG 3

: 3

: OU9670000

: II

: 6.1