Sodium Hypochlorite｜CAS No. 7681-52-9
Chemically expressed as NaOCl, sodium hypochlorite is a distinctive inorganic chlorine-containing compound presented as pale green crystalline solid under standard ambient conditions. This raw material bears a subtle sweet characteristic odor and comes with obvious storage limitations: it is chemically unstable once exposed to open air and will gradually degrade over time.
In terms of solubility performance, sodium hypochlorite dissolves smoothly and completely in cold aqueous solutions without obvious precipitation or turbidity. However, its molecular structure is vulnerable to high temperature; when mixed with hot water, rapid thermal decomposition will occur, which reduces effective chlorine content and weakens its disinfection and bleaching capacity.
Two mainstream concentration formulations dominate global commercial supply chains, tailored to household daily use and industrial mass production separately:
Household-grade liquid bleaching agent
This civilian formula holds approximately 5.25 weight percent sodium hypochlorite, widely applied in home surface cleaning, fabric whitening and daily sterilization scenarios.
Industrial commercial concentrated bleach (customarily named 15% bleach in the industry)
The concentrated variant contains 150 grams of available chlorine per liter of solution. After conversion of mass fraction, this concentration corresponds to nearly 13 wt% sodium hypochlorite, serving as the core raw material for water treatment, industrial disinfection, textile bleaching and large-scale sanitation projects。
Melting point | -16 °C |
Boiling point | 111 °C |
density | 1.25 g/mL at 20 °C |
vapor pressure | 17.5 mmHg ( 20 °C) |
refractive index | 1.3870 |
storage temp. | 2-8°C |
solubility | Methanol (Slightly), Water (Slightly) |
form | |
Specific Gravity | 1.209 |
color | Light yellow |
Odor | pale greenish to yel. liq., chlorine bleach odor |
PH | 12-13 (20°C, 68 °F) |
Water Solubility | decomposes. |
Merck | 14,8628 |
Exposure limits | ACGIH: Ceiling 2 mg/m3 |
Dielectric constant | 6.7（Ambient） |
BCS Class | 1 |
Stability: | Stable. Contact with acids releases poisonous gas ( chlorine ). Light sensitive. Incompatible with strong acids, amines, ammonia, ammonium salts, reducing agents, metals, aziridine, methanol, formic acid, phenylacetonitrile. |
LogP | -3.42 at 20℃ |
CAS DataBase Reference | 7681-52-9(CAS DataBase Reference) |
EPA Substance Registry System | Sodium hypochlorite (7681-52-9) |
Product Usage
Sodium hypochlorite, with its strong oxidizing and disinfecting properties, has a wide range of applications: in the field of disinfection and sterilization, it can be used for surface disinfection in public and private environments such as hospitals and homes, disinfection of drinking water, swimming pool water, and sewage treatment, as well as for cleaning fruits and vegetables, disinfecting equipment, and disinfecting medical instruments (non-precision) in food processing.
Fast transport time
Inventory 2-3 working days New manufacturing 7-10 working days
