Chinese name: Sodium chloride

English name: Sodium chloride

CAS: 7647-14-5

EINECS number: 231-598-3

Molecular formula: ClNa

MDL number: MFCD00003477

Molecular weight: 58.44

Appearance: Colorless to white cube crystal. The relative density is 2.16. The hygroscopicity of pure products is very small (critical temperature 73%, 25℃), such as containing impure magnesium chloride, the hygroscopicity is larger. Melting point 800℃. The aqueous solution is neutral, and the pH value of 5% aqueous solution is 5.5 ~ 8.5. The relative density of saturated salt water (d425) is 1.202, and the freezing point is below -20℃. Soluble in water (1g/2.8m1, 25℃; Or 1g/2.7ml, boiling water) and glycerin (1g/10m1), slightly soluble in ethanol, insoluble in hydrochloric acid. Can contain 2% of food grade anti-binding agents, free flow agents and modifiers, including sodium ferrocyanide ≤13mg/kg, or ammonium ferric citrate ≤25g/100g. If it is iodized salt, it can contain potassium iodide 0.006% ~ 0.010%.

Melting point: 801 °C(lit.)

Boiling point: 100 °C750 mm Hg

Density: 1.199 g/mL at 20 °C

Vapor pressure: 1 mm Hg (865 °C)

Refractive index: n20/D 1.378

Flash point: 1413°C

Storage conditions: 2-8°C

Solubility: H2O: soluble

Form: tablets

Specific gravity: 2.165

Color: White

PH value: 5.5-6.5(1 tablet in 100 mL purified water)

Water solubility: 360 g/L (20 oC)

Sensitivity: hygroscopicity

Maximum wavelength (λmax) : λ: 260 nm Amax: 0.02

λ: 280 nm Amax: 0.01

Merck: 14,8599

BRN: 3534976

Dielectric constant: 5.9 (Ambient)

BCS Class: 1

Stability: Stable. Incompatible with strong oxidants.

InChIKey: FAPWRFPIFSIZLT-UHFFFAOYSA-M

use

Used for the manufacture of soda ash and caustic soda and other chemical raw materials, for ore smelting, food industry and fisheries for salt, but also used as raw materials for seasoning and refined salt