Caustic Soda Flakes

Chemical Name

Concentration

% by weigh

Sodiumhydroxide

1310-73-2

100

Toxicological Data on Ingredients

Sodium hydroxide LD50: Not available. LC50: Not available.

Potential Acute Health Effects

Very hazardous in case of skin contact (corrosive, irritant, permeator), of eye contact (irritant, corrosive), of ingestion, of inhalation. The amount of tissue damage depends on length of contact.  Eye  contact can  result in  corneal damage  or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to gastro-intestinal or respiratory tract,characterized by burning, sneezing and coughing.Severe over-exposure can produce lung damage, choking, unconsciousness or death. Inflammation of the eye is characterized by redness,watering, and itching. Skin inflammation is characterized by itching, scaling, reddening, or, occasionally, blistering.Potential Chronic HealthEffects

Carcinogenic

Not available.

Mutagenic Effects

Mutagenic for mammalian somatic cells.

Teratogenic Effects

Not available.

Developemental Toxicity

Not available.

The substance may be toxic to mucous membranes, upper respiratory tract, skin, eyes.Repeated or prolonged exposure to the substance can produce target organs damage. Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local skin destruction,or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung damage.

Eye Contact

Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. Get medical attention immediately.

Skin Contact

In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Cover the irritated skin with an emollient. Cold water may be used.Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.

Serious Skin Contact

Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek medical attention.

Inhalation

If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention immediately.

Serious Inhalation
 

Evacuate the victim to a safe area as soon as possible. Loosen tight clothing such as a collar, tie, belt or waistband. If breathing is difficult, administer oxygen. If the victim is not breathing, perform mouth-to-mouth resuscitation. WARNING: It may be hazardous to the person providing aid to give mouth-to-mouth resuscitation when the inhaled material is toxic, infectious or corrosive. Seek immediate medical attention.

Ingestion

Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight clothing such as a collar, tie, belt or waistband.

Serious Ingestion

Not available.

Flammability of the Product:

Non-flammable.

Auto-Ignition Temperature

Not applicable.

Flash Points

Not applicable.

Flammable Limits

Not applicable.

Products of Combustion

Not available.

Fire Hazards in Presence of Various Substances

metals

Explosion Hazards in Presence of Various Substances

Risks of explosion of the product in presence of mechanical impact: Not available. Risks of explosion of the product in presence of static discharge: Not available.
Slightly explosive in presence of heat

Fire Fighting Media and Instructions

Not available

Special Remarks on Fire Hazards

sodium hydroxide + zinc metal dust causes ignition of the latter.

Under proper conditions of temperature, pressure and state of division, it can ignite or react violently with acetaldehyde, ally alcohol, allyl chloride, benzene-1,4-diol, chlorine trifluoride, 1,2 dichlorethylene, nitroethane,nitromethane, nitroparaffins, nitropropane, cinnamaldehyde, 2,2-dichloro-3,3 dimethylbutane.Sodium hydroxide in contact with water may generate enough heat to ignite adjacent combustible materials. Phosphorous boiled with NaOH yields mixed phosphines which may ignite spontanously in air.sodium hydroxide and cinnamaldehyde + heat may cause ignition.Reaction with certain metals releases flammable and explosive hydrogen gas.
Special Remarks on Explosion Hazards:
Sodium hydroxide reacts to form explosive products with ammonia + silver nitrate.Benzene extract of allyl benzenesulfonate prepared from allyl alcohol, and benzene sulfonyl chloride in presence of aquesous sodium hydroxide, under vacuum distillation, residue darkened and exploded. Sodium Hydroxde + impure tetrahydrofuran, which can contain peroxides, can cause serious explosions.Dry mixtures of sodium hydroxide and sodium tetrahydroborate liberate hydrogen explosively at 230-270 deg. C.Sodium Hydroxide reacts with sodium salt of trichlorophenol + methyl alcohol + trichlorobenzene + heat to cause an explosion.

Small Spill

Use appropriate tools to put the spilled solid in a convenient waste disposal container. If necessary: Neutralize the residue with a dilute solution of acetic acid.

Large Spill

Corrosive solid.Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray to reduce vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Call for assistance on disposal. Neutralize the residue with a dilute solution of acetic acid. Be careful that the product is not present at a concentration level above TLV. Check TLV on the MSDS and with local authorities. 

Precautions
 

Keep container dry. Do not breathe dust. Never add water to this product. In case of insufficient ventilation, wear suitable respiratory equipment. If you feel unwell, seek medical attention and show the label when possible. Avoid contact with skin and eyes. Keep away from incompatibles such as oxidizing agents, reducing agents, metals, acids, alkalis, moisture.

Storage

Keep container tightly closed. Keep container in a cool, well-ventilated area. Hygroscopic. Deliquescent. 

Engineering Controls

Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants below the exposure limit.

Personal Protection

Splash goggles.Synthetic apron. Vapor and dust respirator. Be sure to use an approved/certified respirator or equivalent. Gloves.

Personal Protection in Case of a Large Spill
 

Splash goggles. Full suit. Vapor and dust respirator. Boots. Gloves. A self contained breathing apparatus should be used to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product.

Exposure Limits

STEL: 2 (mg/m3) from ACGIH (TLV) [United States] TWA: 2 CEIL: 2 (mg/m3) from OSHA (PEL) [United States] CEIL: 2 (mg/m3) from NIOSHConsult local authorities for acceptable exposure limits.

Physical state and appearance

Solid. (Deliquescent solid.)

Odor

Odorless.

Taste

Not available.

Molecular Weight

40 g/mole

Color

White.

pH (1% soln/water)

Boiling Point

1388°C (2530.4°F)

Melting Point

323°C (613.4°F)

Critical Temperature

Not available.

Specific Gravity

2.13 (Water = 1)

Vapor Pressure

Not applicable.

Vapor Density

Not available.

Volatility

Not available.

Odor Threshold

Not available.

Water/Oil Dist. Coeff

Not available.

Ionicity (in Water)

Not available.

Dispersion Properties

See solubility in water

Solubility

Easily soluble in cold water.

Stability

The product is stable.

Instability Temperature

Not available.

Conditions of Instability

Incompatible materials, moisture, moist air

Incompatibility with various substances

Highly reactive with metals.Reactive with oxidizing agents, reducing agents, acids, alkalis,
moisture.

Corrosivity

Not available

Special Remarks on Reactivity

Hygroscopic. Much heat is evolved when solid material is dissolved in water. Therefore cold water and caution must be used for this process.Sodium hydroxide solution and octanol + diborane during a work-up of a reaction mixture of oxime and diborane in tetrahyrofuran is very exothermic, a mild explosion being noted on one occassion.
 

Reactive with water, acids (mineral, non-oxidizing, e.g. hydrochloric, hydrofluoric acid, muriatic acid, phosphoric),acids (mineral, oxidizing e.g. chromic acid, hypochlorous acid, nitric acid, sulfuric acid), acids (organic e.g. acetic cid, benzoic acid, formic acid, methanoic acid, oxalic acid), aldehydes (e.g. acetaldehyde, acrolein, chloral hydrate, foraldehyde), carbamates (e.g. carbanolate, carbofuran), esters (e.g. butyl acetate, ethyl acetate, propylormate), halogenated organics (dibromoethane, hexachlorobenzene, methyl chloride, trichloroethylene),isocyanates (e.g. methyl isocyanate), ketones (acetone, acetophenone, MEK, MIBK), acid chlorides, strong bases, strong oxidizing agents, strong reducing agents, flammable liquids, powdered metals and metals (i.e aluminum, tin, zinc, hafnium, raney nickel), metals (alkali and alkaline e.g. cesium, potassium, sodium), metal compounds (toxic e.g. berylium, lead acetate, nickel carbonyl, tetraethyl lead), mitrides (e.g. potassium nitride, sodium nitride), nitriles (e.g. acetonitrile, methyl cyanide), nitro compounds (organic e.g. nitrobenzene,nitromethane), acetic anhydride, chlorohydrin, chlorosulfonic acid, ethylene cyanohydrin, glyoxal, hydrosulfuric acid, oleum, propiolactone, acylonitrile, phorosous pentoxide, chloroethanol, chloroform-methanol,tetrahydroborate, cyanogen azide, 1,2,4,5 tetrachlorobenzene, cinnamaldehyde.
Reacts with formaldehyde hydroxide to yield formic acid, and hydrogen.

Special Remarks on Corrosivity

Very caustic to aluminum and other metals in presence of moisture.

Polymerization

Will not occur.

Routes of Entry

Absorbed through skin. Dermal contact. Eye contact. Inhalation. Ingestion.

Toxicity to Animals

LD50

Not available.

LC50

Chronic Effects on Humans

Mutagenic Effects

Mutagenic for mammalian somatic cells.

May cause damage to the following organs

mucous membranes, upper respiratory tract, skin, eyes.

Other Toxic Effects on Humans

Extremely hazardous in case of inhalation (lung corrosive). Very hazardous in case of skin contact (corrosive, irritant, permeator), of eye contact (corrosive), of ingestion, .

Special Remarks on Toxicity to Animals

Lowest Published Lethal Dose

LDL [Rabbit] - Route

Oral; Dose: 500 mg/kg

Special Remarks on Chronic Effects on Humans

May affect genetic material. Investigation as a mutagen (cytogenetic analysis)

Special Remarks on other Toxic Effects on Humans

Ecotoxicity

Not available.

BOD5 and COD

Not available.

Products of Biodegradation

Possibly hazardous short term degradation products are not likely. However, long term degradation products may arise.

Toxicity of the Products of Biodegradation

The product itself and its products of degradation are not toxic.

Special Remarks on the Products of Biodegradation

Not available.

Waste Disposal

Waste must be disposed of in accordance with federal, state and local environmental control regulations.

DOT Classification

Class 8: Corrosive material

Identification

Sodium hydroxide, solid UNNA: 1823 PG: II

Special Provisions for Transport

Not available.

Federal and State Regulations::

Illinois toxic substances disclosure to employee act

Sodium hydroxide

Illinois chemical safety act

Sodium hydroxide

New York release reporting list

Sodium hydroxide

Rhode Island RTK hazardous substances

Sodium hydroxide

Pennsylvania RTK

Sodium hydroxide

Minnesota

Sodium hydroxide

Massachusetts RTK

Sodium hydroxide

New Jersey

Sodium hydroxide

Louisiana spill reporting

Sodium hydroxide

California Director's List of Hazardous Substances

Sodium hydroxide

TSCA 8(b) inventory

Sodium hydroxide

CERCLA

Hazardous substances.: Sodium hydroxide: 1000 lbs. (453.6 kg)

Other Regulations

OSHA

Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).

EINECS

This product is on the European Inventory of Existing Commercial Chemical Substances.

Other Classifications

WHMIS (Canada)

CLASS E: Corrosive solid.

DSCL(EEC)                                 

R35- Causes severe burns.S26- In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.S37/39- Wear suitable gloves and eye/face protection. S45- In case of accident or if you feel unwell,seek medical advice immediately (show the label where possible).

HMIS (U.S.A.)

Health Hazard: 3 Fire Hazard: 0 Reactivity: 2

Personal Protection

Health: 3  Flammability: 0  Reactivity: 1

Specific hazard

Protective Equipment

Gloves.Synthetic apron.Vapor and dust respirator. Be sure to use an approved/certified respirator or  equivalent. Wear appropriate respirator when ventilation is inadequate. Splash goggles.

References

Not available.

Other Special Considerations

Not available.

The information above is believed to be accurate and represents the best information currently available to us. However, wemake no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall ScienceLab.com be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if ScienceLab.com has been advised of the possibility of such damages.

DISCLAIMER OF LIABILITY :The information in this SDS was obtained from sources which we believe are reliable. However, the information is provided without any warranty, express or implied, regarding its correctness. The conditions or methods of handling, storage, use or disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly disclaim liability for loss, damage or expense arising out of or in any way connected with the handling, storage, use or disposal of the product. This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may not be applicable.