Sodium Hydroxide
Strong Alkalinity and High Reactivity: As a powerful base, sodium hydroxide provides excellent chemical reactivity, making it highly effective in neutralization, saponification, and chemical processing applications.
Excellent Solubility and Easy Handling: It readily dissolves in water as well as in methanol and ethanol, allowing for flexible formulation and efficient use across different industrial processes.
Wide Industrial Applicability: Sodium hydroxide is an essential raw material in numerous industries, including paper and pulp manufacturing, textiles, soap and detergent production, and household cleaning products.
Reliable Performance in Cleaning and Processing: Its strong alkaline and corrosive properties enable efficient removal of grease, organic residues, and blockages, ensuring consistent performance in both industrial and domestic cleaning applications.
Product Description of Sodium Hydroxide CAS#1310-73-2
Sodium hydroxide, commonly referred to as caustic soda, has the chemical formula NaOH. It is a highly corrosive, strong alkali that typically appears as white flakes or pellets. It readily dissolves in water to form an alkaline solution and is also soluble in methanol and ethanol. Sodium hydroxide is deliquescent, meaning it easily absorbs moisture from the air as well as acidic gases such as carbon dioxide. As one of the most widely used chemical substances, it plays an essential role in numerous industrial processes. It is extensively applied in the production of pulp and paper, textiles, soaps, and detergents, and is also commonly found in household alkaline drain-cleaning products.
Sodium hydroxide Chemical Properties
Melting point | 681 °C(lit.) |
Boiling point | 1390°C |
density | 1.515 g/mL at 20 °C |
vapor density | <1 (vs air) |
vapor pressure | 1 mm Hg ( 745 °C) |
refractive index | 1,473-1,475 |
Fp | 176-178°C |
storage temp. | room temp |
solubility | H2O: 1 M at 20 °C, clear, colorless |
form | beads |
Specific Gravity | 2.13 |
color | White |
Odor | Odorless |
PH Range | 13 - 14 |
PH | 10.98(1 mM solution);11.95(10 mM solution);12.88(100 mM solution); |
Water Solubility | SOLUBLE |
Sensitive | Air Sensitive & Hygroscopic |
Decomposition | 176-178 ºC |
λmax | λ: 260 nm Amax: 0.015 |
Merck | 14,8627 |
Exposure limits | TLV-TWA air 2 mg/m3 (OSHA); ceiling 2 mg/m3 (ACGIH) and 2 mg/m3/15 min (NIOSH). |
Dielectric constant | 57.5（25℃） |
Stability: | hygroscopic |
CAS DataBase Reference | 1310-73-2(CAS DataBase Reference) |
NIST Chemistry Reference | Sodium hydroxide(1310-73-2) |
EPA Substance Registry System | Sodium hydroxide (1310-73-2) |
Safety Information
Hazard Codes | C,Xi |
Risk Statements | 36/38-35-34 |
Safety Statements | 26-45-37/39-24/25-36/37/39 |
RIDADR | UN 1824 8/PG 2 |
WGK Germany | 1 |
RTECS | TT2975000 |
F | 8 |
TSCA | Yes |
HS Code | 2815 11 00 |
HazardClass | 8 |
PackingGroup | II |
Hazardous Substances Data | 1310-73-2(Hazardous Substances Data) |
Toxicity | LD orally in rabbits: 500 mg/kg (10% soln) (Fazekas) |
IDLA | 10 mg/m3 |
Product Application of Sodium Hydroxide CAS#1310-73-2
Sodium hydroxide has a very broad range of applications. In laboratory work, it is commonly used as a chemical reagent and can also function as an alkaline drying agent due to its strong moisture-absorbing properties. Caustic soda plays a vital role in the national economy and is indispensable to many industrial fields. The largest consumption occurs in the chemical and pharmaceutical manufacturing sector, followed by papermaking, aluminum and tungsten smelting, rayon and synthetic fiber production, and soap manufacturing.
In addition, substantial quantities of sodium hydroxide are used in the production of dyes, plastics, pharmaceuticals, and organic intermediates, as well as in scrap rubber recycling, metallic sodium production, water electrolysis, and the manufacture of inorganic salts such as borax, chromium salts, manganates, and phosphates. Because of its strong alkalinity, sodium hydroxide may cause water pollution, so appropriate precautions should be taken to protect plants and aquatic life.
