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Caustic soda liquid

Material safety data sheet (MSDS)

1. Material identification information

Product name

Caustic soda liquid

 Sudiun hydroxide

Usage

It is used to petroleum refining, papermaking, soap, colouration, leather manufacture, pharmaceutical, organic synthesis, etc.

Main content

Maximum allowable concentration

Acute toxicity

Chemical name

Structural formula

Content %

MAC(mg/m3)

LD50

LC50

Sodium hydroxide

NaOH

30

0.5

No information

No information

2. Physical and chemical properties

Melting point ℃

Meaningless

Relative density

1.37

Boiling point℃

No information

Chemical category

Inorganic alkali

Dissolubility

It is soluble in water, ethanol, glycerol and insoluble in acetone.

Appearance and properties

Colorless sticky liquid

3. Stability and reaction characteristics

Stability

Stable

Polymerization harm

No polymerization

Avoid contact conditions

Damp air

Taboo things

Strong acid, flammable or combustible, carbon dioxide, hyperoxide, water.

Burning decomposition products

It may produce harmful toxic smoke

4. Explosion characteristics and fire protection

Flammability

Non-combustible

Upper explosive limit %

Meaningless

Flash point℃

Meaningless

Lower explosive limit%

Meaningless

Dangerous properties

It will have neutralization reaction with acid and release heat. It has corrosivity to aluminum, zinc and tin, and release inflammable and explosive hydrogen. This product is corrosive solution, has strong corrosivity.

Extinguishing method

This product is non-combustible.

5. Health hazard and emergency measures

Invasion way

(  √ )Inhalation     (  √ )Ingestion   ( √  )Skin Inhalation

Health hazard

This product has strong stimulation and corrosivity. If it is splashed on skin, especially mucosa, there can produce soft callus, and penetrate into deep tissues. There will leave scar after burn. If it is splashed into eye, it not only damage the cornea, but also make the eye deep tissue damage. Accidental eat can cause gastrointestinal burns, mucosal erosion, bleed and shock.

Emergency measures

Skin contact:Take off the contaminated clothes immediately. Flow with plenty of clean flowing water 15 minutes and go to a doctor.
Eye contact:Open the eyelid immediately. Use plenty of liquid water or saline wash at least 15 minutes. And go to a doctor.
Inhalation:   Away from the scene and go to the place with fresh air quickly. Keep pneogaster unobstructed. If breathing is difficult, give oxygen. If the breathing is stop, do mouth-to-mouth breathing immediately. And go to a doctor.
Ingestion:  If eat it accidentally, gargle with water immediately. Give milk or albumen and go to a doctor.

6. Safeguard methods

Workshop health standard

China MAC(mg/m3)  0.5

Individual protection

Breath

When necessary, wear air respirator.

Eye

Respiratory system protection has already do protection.

Body

Wear rubber acid alkali resistant clothing.

Hand

Wear rubber acid alkali resistant glove.

Others

It is forbiddened to smoke, eat and drink in the job site. Shower and change clothes after work. Separately store the clothes that is toxic contamination. And wash for later use. Keep good health habits.

7. Leakage emergency treatment

Leakage emergency response

Isolate leakage pollution area and restrict access. Suggest emergency personnel wear self-sufficiency official respirator and acid and alkali resistant work clothes. Don't directly contact with the leak things. Small leakage: use large amounts of water to rinse, and put the water into waste water system after it is diluted. Large amount of leakage: Collect and recycle or transport to the waste disposal sites.

Waste gas treatment

Refer to the relevant regulations of state and local before disposal.After neutralization and dilute, high concentration is harmful to the aquatic organisms.

Environmental treatment

Since it is alkaline, it may cause pollution to water bodies. Aquatic creatures and plants should be payed special attention.

8. Directions for storage and transportation

Directions for storage and transportation

It should be storaged in dry and clean storage room. Pay attention to moistureproof and rain. It should be placed separately with flammable or combustible materials. It should be pay attention to individual production when partial shipments or transport. It should be light handling when transport and avoid package damage. It should avoid rain when transport.

Transport information

Dangerous number

95001

UN Number

1791

Package classification

Package mark

20

Package method

It is packaged with plastic bag.

9. Regulatory information

Regulatory information

Dangerous chemicals safety management regulations (issued by the State Council in Feb. 17th, 1987). Dangerous chemicals safety management regulations implementation detail rules (Chemical work development [1992] No. 677). Workplace safety use hazardous chemicals regulations ([1996] work department development No. 423). Both above have made corresponding provisions according to the safety use, production, storage, transport, load and unload of hazardous chemicals. Commonly used dangerous chemicals classification and mark (GB13690-92) classified this material as alkaline corrosive product 8.2.

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