Caustic Soda Flakes MSDS

Classification
This material is considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200)
Skin corrosion/irritation Category 1 Sub-category A
Serious eye damage/eye irritation Category 1
Acute aquatic toxicity Category 3
Label Elements
EMERGENCY OVERVIEW
Physical Hazards Corrosive to Metals Category 1
Precautionary Statements – Prevention
Keep only in original container
Do not breathe dusts or mists
Wash face, hands and any exposed skin thoroughly after handling
Wear protective gloves/protective clothing/eye protection/face protection
Avoid release to the environment

Synonyms Sodium hydroxide.
Chemical name CAS No weight-%
Sodium hydroxide 1310-73-2 99-100

FIRST AID MEASURES
General advice In case of accident or un wellness, seek medical advice immediately (show directions for
use or safety data sheet if possible). Do not delay care and transport of a seriously injured person.
Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Remove
contact lenses, if present and easy to do. Continue rinsing. Immediate medical attention is required. Call a
physician immediately.
Appearance white flakes Physical State solid Odor
Skin contact For minor skin contact, avoid spreading material on unaffected skin. Wash off immediately with soap
and plenty of water while removing all contaminated clothes and shoes. Remove and isolate contaminated
clothing and shoes. Wash contaminated clothing before reuse. Immediate medical attention is required. Call a
physician. Inhalation Remove to fresh air. If breathing is difficult, give oxygen. If breathing has stopped, give
artificial respiration. Get medical attention immediately. Keep body warm with blankets. Call a physician or
poison control center immediately.
Ingestion Do NOT induce vomiting. Rinse mouth. Drink plenty of water. Never give anything by mouth to an
unconscious person. Immediate medical attention is required. Call a physician or poison control center
immediately. Most important symptoms and effects, both acute and delayed
Symptoms The product causes burns of eyes, skin and mucous membranes. MAY BE FATAL IF
SWALLOWED.
Indication of any immediate medical attention and special treatment needed Note to physicians Treat
symptomatically. In cases of severe esophageal corrosion, consider the therapeutic use of steroids. Supportive
measures including monitoring of electrolytes, acid-base balance, gas exchange and fluid intake

Suitable Extinguishing Media Use extinguishing measures that are appropriate to local circumstances and the
Surrounding environment. ABC-powder. Dry chemical. Unsuitable Extinguishing Media Do not use halon type
extinguisher. DO NOT USE WATER, FOAM OR CO2. Water reactive.
Specific hazards arising from the chemical
Containers may explode when heated or if contaminated with water. Hazardous combustion products Non
combustible. In contact with water releases flammable gases. May ignite combustibles (wood paper, oil, clothing,
etc.). Explosion data
Sensitivity to Mechanical Impact None.
Sensitivity to Static Discharge None.
Protective equipment and precautions for firefighters As in any fire, wear self-contained breathing apparatus
pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.

Personal precautions, protective equipment and emergency procedures
Personal precautions Use personal protective equipment as required. Avoid contact with skin, eyes and inhalation
of vapors. Evacuate personnel to safe areas. Environmental Precautions Environmental Precautions Prevent
product from entering drains. Do not allow into any sewer, on the ground or into any body of water. Local
authorities should be advised if significant spillages cannot be contained. Should not be released into the
environment. See Section 12 for additional
Ecological Information
Methods for Containment Prevent further leakage or spillage if safe to do so. Dike far ahead of spill; use dry sand
to contain the flow of material. Methods for cleaning up Spilled caustic soda rapidly absorbs moisture from the
atmosphere to form a slippery solution. Collect spillage. Soak up with inert absorbent material. Never soak up
spilled or leaked acids and bases with sawdust, wood chips or similar materials. Sweep up and shovel into suitable
containers for disposal

Precautions for safe handling
Advice on safe handling Handle in accordance with good industrial hygiene and safety practice. When blending,
always add caustic to water; never the reverse. Conditions for safe storage, including any incompatibilities
Storage Conditions Keep tightly closed in a dry and cool place. To guarantee the quality and properties of the
product keep protected from humidity and bad weather conditions. Packaging materials Corrosive to metal.

Control parameters
Chemical name ACGIH TLV OSHA PEL NIOSH
Sodium hydroxide
1310-73-2
Ceiling: 2 mg/m3 TWA: 2 mg/m3
(vacated) Ceiling: 2 mg/m3

Stability Stable under recommended storage conditions. Possibility of hazardous reactions Hygroscopic,
Incompatible Materials, Reacts with many compounds
Hazardous polymerization None under normal processing
Conditions to Avoid Reacts with water.
Incompatible Materials Aluminum Brass Tin Zinc organic materials
Chlorinated hydrocarbons
Strong reducing agents
Combustible material
Hazardous decomposition products None known based on information supplied

Information on likely routes of exposure
Inhalation Irritating to respiratory system. Eye Contact Risk of serious damage to eyes. Corrosive to the eyes and
may cause severe damage including blindness. Skin contact Causes severe burns. Ingestion Ingestion causes
severe swelling, severe damage to the delicate tissue and danger of perforation. Severe irritation of the mucous
membranes causes vomiting, nausea and burns.
Chemical name Dermal LD50 Inhalation LC50
Sodium hydroxide 1350 mg/kg ( Rabbit ) –
Information on toxicological effects
Symptoms No information available. Delayed and immediate effects as well as chronic effects from short and
long-term exposure
Skin corrosion/irritation Causes severe burns.
Serious eye damage/eye irritation Risk of serious damage to eyes. Sensitization No information available. Germ
Cell Mutagenicity None known.Carcinogenicity There are no known carcinogenic chemicals in this product.
Reproductive Toxicity No known effect based on information supplied. Developmental Toxicity None known.
STOT – single exposure Target Organs, Respiratory System, Skin, Eyes, Lungs, Mucous membrane
STOT – repeated exposure Not classified. Aspiration Hazard Not applicable

Ecotoxicity Harmful to aquatic life
Chemical name Fish Crustacea
Sodium hydroxide 45.4: 96 h Oncorhynchus mykiss mg/L LC50 static
Persistence and degradability not persistent. Bioaccumulation Material does not bioaccumulate. Mobility Reacts
with water. Other adverse effects No information available.

Waste treatment methods
Disposal of wastes Disposal should be in accordance with applicable regional, national and local laws and
Regulations. This material, as supplied, is a hazardous waste according to federal regulations (40 CFR 261). Do not
empty into drains; dispose of this material and its container in a safe way. Contaminated packaging Improper
disposal or reuse of this container may be dangerous and illegal.

DOT
UN/ID no UN1823
Proper Shipping Name Sodium Hydroxide, solid
Hazard Class 8
Packing group II
Reportable Quantity (RQ) 1000 lbs / 454 kg
Quantity Limitations Authorized weight in passenger aircraft is limited to 15 kg per parcel; therefore, not possible
for 25 kg bags. Cargo aircraft authorizes 50 kg per parcel. Description UN 5H3/Y25/S97/K.S.A./APCI
Labels Placard Required: Corrosive