Latest News
  • Cutback Bitumen TDS
  • Cutback Bitumen TDS
  • Oil – Gas Grade
  • Caustic Soda Flake
  • Oxidized Bitumen 105-15
  • Oxidized Bitumen 115/15
  • Gilsonite Powder
  • PUB-LTD Company
  • Oxidized Bitumen 75/35
  • Gilsonite Grades
publtd
  • Home
  • Bitumen
    • Penetration Grade Bitumen
      • bitumen penetration 10/20
      • Bitumen Penetration 30/40
      • Bitumen Penetration 35/50
      • Bitumen Penetration 40/50
      • Bitumen Penetration 40/60
      • Bitumen 60/70
      • Bitumen Penetration 80/100
      • Bitumen Penetration 100/150
      • Bitumen Penetration 160/220
    • Viscosity Grade Bitumen
      • VG Grade Bitumen
      • AC Grade Bituman
      • AR Bitumen
    • Oxidized Bitumen
      • Oxidized Bitumen 75/25
      • Oxidized Bitumen 75/30
      • Oxidized Bitumen 75/35
      • Oxidized Bitumen 85/25
      • Oxidized Bitumen 85/30
      • Oxidized Bitumen 85/40
      • Oxidized Bitumen 90-10
      • Oxidized Bitumen 90/15
      • Oxidized Bitumen 90/40
      • Oxidized Bitumen 95-25
      • Oxidized Bitumen 150-5
      • Oxidized Bitumen 105-15
      • Oxidized Bitumen 105-35
      • Oxidized Bitumen 115/15
    • Performance Grade Bitumen
    • Polymer Bitumen
    • Cutback Bitumen
      • Slow Curing SC
        • Cutback Bitumen SC800
        • Cutback Bitumen SC250
        • Cutback Bitumen SC70
        • Cutback Bitumen SC30
      • Medium Curing MC
        • Cutback Bitumen MC3000
        • Cutback Bitumen MC800
        • Cutback Bitumen MC250
        • Cutback Bitumen MC70
        • Cutback Bitumen MC30
      • Rapid Curing RC
    • Bitumen Emulsion
  • Gilsonite
    • Asphalt Grade
    • Oil – Gas Grade
    • Drilling Fluid Grade
    • Cementing
    • Ink Grade
    • Gilsonite Industrial
    • Foundry
    • Gilsonite Powder
    • Gilsonite Lump
  • Minerals
    • Gypsum
    • Bentonite
    • Baryte
    • Cobalt
    • Chromium
    • Iron ore
  • paraffin
    • wax
      • Slack Wax
        • Slack Wax Heavy Grade
        • Slack Wax Light Grade
      • Paraffin Wax
        • Fully Refined Paraffin Wax
        • Semi Refined Paraffin Wax
      • Micro-crystalline Wax
      • Residue Wax
    • Petroleum Jelly
      • Industrial Petroleum Jelly
      • Cosmetic Petroleum Jelly
      • Medical Petroleum Jelly
    • Liquid Paraffin
      • Cosmetic Grade Liquid Paraffin
      • Industrial Grade Liquid Paraffin
    • Normal Paraffin
    • Paraffin Emulsion
  • oil
    • Base oil
      • Base Oil SN150
      • Base Oil SN500
      • Base Oil SN650
    • Rubber process oil
    • PBR Polybutadiene Rubber
    • Butadiene Rubber
    • Green Rubber Process Oil
      • Green Rubber Process Oil 15
      • Green Rubber Process Oil 20
      • Green Rubber Process Oil 40
  • Chemicals
    • Caustic Soda (NaOH)
      • Caustic Soda Flakes
      • Caustic Soda Liquid
    • Calcium Chloride
      • Calcium Chloride Industrial Grade
      • Calcium Chloride Food Grade
    • PVC
    • Aluminium Sulfate
    • White Spirit
    • Melamine Resin
      • Melamine Formaldehyde Laminating Powder
  • Drilling
    • Natural Bitumen (Gilsonite)
    • Bentonite
    • Calcium Chloride
    • Sodium Hydroxide
  • TDS
    • Bitumen All Grades
      • Bitumen Penetration All Grades
      • Viscosity Bitumen All Grades
      • Oxidized Bitumen TDS
      • Cutback Bitumen TDS
    • chemical products
      • Caustic Soda Flake
      • Caustic Lye
      • Calcium Chloride powder
      • Aluminium Sulphate
      • Melamine Resin
    • Oil and Wax
      • Base oil
      • RPO
      • Slack Wax Grades
    • Mineral Products
      • Gilsonite Grades
  • Contact us

NaOH

NaOH

What is NaOH?

NaOH at room temperature, is a white crystalline odorless solid that absorbs moisture from the air. It is a manufactured substance. When dissolved in water or neutralized with acid it liberates substantial heat, which may be sufficient to ignite combustible materials. Sodium hydroxide is very corrosive. It is generally used as a solid or a 50% solution.
Other common names include caustic soda and lye. Sodium hydroxide is used to manufacture soaps, rayon, paper, explosives, dyestuffs, and petroleum products. It is also used in processing cotton fabric, laundering and bleaching, metal cleaning and processing, oxide coating, electroplating, and electrolytic extracting. It is commonly present in commercial drain and oven cleaners.

NaOH Physical properties:

Pure sodium hydroxide is a colorless crystalline solid that melts at 318 °C without decomposition. It is highly soluble in water, with a lower solubility in polar solvents such as ethanol and methanol. NaOH is insoluble in ether and other non-polar solvents.

Similar to the hydration of sulfuric acid, dissolution of solid sodium hydroxide in water is a highly exothermic reaction. where a large amount of heat is liberated, posing a threat to safety through the possibility of splashing. The resulting solution is usually colorless and odorless. As with other alkaline solutions, it feels slippery with skin contact due to the process of saponification that occurs between NaOH and natural skin oils.

Chemical properties:

Reaction with acids:

Sodium hydroxide reacts with protic acids to produce water and the corresponding salts. For example, when sodium hydroxide reacts with hydrochloric acid, sodium chloride is formed:

NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
In general, such neutralization reactions are represented by one simple net ionic equation:

OH−(aq) + H+(aq) → H2O(l)
This type of reaction with a strong acid releases heat, and hence is exothermic. Such acid-base reactions can also be used for titrations. However, sodium hydroxide is not used as a primary standard because it is hygroscopic and absorbs carbon dioxide from air.

Reaction with acidic oxides:

Sodium hydroxide also reacts with acidic oxides, such as sulfur dioxide. Such reactions are often used to “scrub” harmful acidic gases (like SO2 and H2S) produced in the burning of coal and thus prevent their release into the atmosphere. For example,

2 NaOH + SO2 → Na2SO3 + H2O

Reaction with amphoteric metals and oxides:

Glass reacts slowly with aqueous sodium hydroxide solutions at ambient temperatures to form soluble silicates. Because of this, glass joints and stopcocks exposed to sodium hydroxide have a tendency to “freeze”. Flasks and glass-lined chemical reactors are damaged by long exposure to hot sodium hydroxide, which also frosts the glass. Sodium hydroxide does not attack iron since iron does not have amphoteric properties (i.e., it only dissolves in acid, not base). A few transition metals, however, may react vigorously with sodium hydroxide.

In 1986, an aluminium road tanker in the UK was mistakenly used to transport 25% sodium hydroxide solution, causing pressurization of the contents and damage to the tanker. The pressurization was due to the hydrogen gas which is produced in the reaction between sodium hydroxide and aluminium:

2 Al + 2 NaOH + 6 H2O → 2 NaAl(OH)4 + 3 H2

 

Bitumen Penetration 80-100

Bitumen Penetration 80/100

bitumenJanuary 17, 2018

Bitumen Penetration Grade 80-100 PUB-LTD is a dynamic and multi-faceted limited company based in Iran actively involved in manufacturing procurement distribution and export of various grades of oxidized bitumen & penetration Bitumen as bitumen 60/70,…

About

Maecenas finibus pretium congue. Quisque sed sem itum turpis. Mauris ut quam vitae urna dignissim.

Curabitur pharetra mauris id urna vestibulum, ne pharetra elit commodo. Nunc rutrum mi lectus am utan es nimbus avientin am estas potivan.

Recent posts

  • Cutback Bitumen TDS December 23, 2018
  • Cutback Bitumen TDS December 1, 2018
  • Oil – Gas Grade September 4, 2018
February 2019
M T W T F S S
« Dec    
 123
45678910
11121314151617
18192021222324
25262728  

office

Phone: Tell : 00983133458785
Email: info@pub-ltd.com

General manager

Phone: mobile/whatsApp : 00989131187392
Email: gm@pub-ltd.com

sales director

Email: commercial@pub-ltd.com
Go Up
© 2019 Newspaper-X a theme by Colorlib
  • Bitumen
  • Calcium Chloride
  • Cosmetic Grade
  • Drilling
  • home
  • Medical Grade
  • My account
  • Normal Paraffin
  • Paraffin Wax
  • pub-ltd
  • WPMS HTML Sitemap