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Safety Data Sheet EN

Sodium hydroxide

CAS 1310-73-2

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Sodium hydroxide
Product Form
pellets
Product Code
A16037
Chemical Name
Sodium hydroxide
Synonyms
Caustic soda; Lye

Regulatory Identifiers

CAS Number
1310-73-2 Check regulations →

Identified Uses

Laboratory chemicals.

Uses advised against

No Information available

Manufacturers & Suppliers

Alfa Aesar logo

Alfa Aesar

manufacturer

Shore Road, Port of Heysham Industrial Park, Heysham, Lancashire LA3 2XY, United Kingdom

+44 (0) 1524 850506

http://www.alfa.com

Emergency Contacts

Carechem 24

+44 (0) 1865 407333

EN

Carechem 24

+44 (0) 1235 239670

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified danger

Hazard Classifications

Skin Corr. Cat. 1A H314
Eye Dam. Cat. 1 H318

GHS Pictograms

GHS05 - Corrosive

GHS05

Hazard Statements

H314 Causes severe skin burns and eye damage

Precautionary Statements

P280 Wear protective gloves/protective clothing/eye protection/face protection
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
P310 Immediately call a POISON CENTER or doctor/physician

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type mixture
Chemical Name CAS Number Concentration Hazardous
Sodium hydroxide EC: 215-185-5 1310-73-2 95% Yes
Sodium carbonate EC: 207-838-8 497-19-8 3% Yes
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Remove to fresh air. If not breathing, give artificial respiration. Call a physician or poison control center immediately. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.

Symptoms: Causes burns by all exposure routes.

Skin contact

Wash off immediately with soap and plenty of water while removing all contaminated clothes and shoes. Call a physician immediately.

Symptoms: Causes burns by all exposure routes.

Eye contact

Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Immediate medical attention is required. Keep eye wide open while rinsing.

Symptoms: Causes burns by all exposure routes.

Ingestion

Immediate medical attention is required. Do NOT induce vomiting. Drink plenty of water. Never give anything by mouth to an unconscious person.

Symptoms: Causes burns by all exposure routes. Ingestion causes severe swelling, severe damage to the delicate tissue and danger of perforation: Product is a corrosive material.

Immediate Medical Attention

Immediate medical attention is required. Immediate medical attention is required. Call a physician immediately. Immediate medical attention is required. Call a physician or poison control center immediately.

Medical Treatment

Possible perforation of stomach or esophagus should be investigated

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

Suitable media

Substance is nonflammable; use agent most appropriate to extinguish surrounding fire. CO₂, dry chemical, dry sand, alcohol-resistant foam.

Unsuitable media

No information available.

Specific hazards

The product causes burns of eyes, skin and mucous membranes.

Instructions

As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.

Firefighter Protection

Wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

Emergency procedures

Use personal protective equipment as required. Evacuate personnel to safe areas. Avoid contact with skin, eyes or clothing.

Environmental

Should not be released into the environment.

Cleanup methods

Sweep up and shovel into suitable containers for disposal.

—

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

Handling

Wear personal protective equipment/face protection. Do not get in eyes, on skin, or on clothing. Use only under a chemical fume hood. Do not breathe dust. Do not ingest. If swallowed then seek immediate medical assistance.

Storage

Keep containers tightly closed in a dry, cool and well-ventilated place. Corrosives area.

Hygiene

Handle in accordance with good industrial hygiene and safety practice. Keep away from food, drink and animal feeding stuffs. Do not eat, drink or smoke when using this product. Remove and wash contaminated clothing and gloves, including the inside, before re-use. Wash hands before breaks and after work.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Use only under a chemical fume hood. Wherever possible, engineering control measures such as the isolation or enclosure of the process, the introduction of process or equipment changes to minimise release or contact, and the use of properly designed ventilation systems, should be adopted to control hazardous materials at source

Hands

Protective gloves. Glove material: Neoprene. Breakthrough time: See manufacturers recommendations. Glove thickness: -. EU standard: EN 374. Glove comments: (minimum requirement). Inspect gloves before use. Please observe the instructions regarding permeability and breakthrough time which are provided by the supplier of the gloves. (Refer to manufacturer/supplier for information). Ensure gloves are suitable for the task: Chemical compatability, Dexterity, Operational conditions, User susceptibility, e.g. sensitisation effects, also take into consideration the specific local conditions under which the product is used, such as the danger of cuts, abrasion. Remove gloves with care avoiding skin contamination.

Eyes

Goggles (European standard - EN 166)

Respiratory

When workers are facing concentrations above the exposure limit they must use appropriate certified respirators. To protect the wearer, respiratory protective equipment must be the correct fit and be used and maintained properly. Large scale/emergency use: Use a NIOSH/MSHA or European Standard EN 136 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Recommended Filter type: Particulates filter conforming to EN 143. Small scale/Laboratory use: Use a NIOSH/MSHA or European Standard EN 149:2001 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Recommended half mask:- Valve filtering: EN405; or; Half mask: EN140; plus filter, EN 141. When RPE is used a face piece Fit Test should be conducted

Skin/Body

Long sleeved clothing

Environmental

Prevent product from entering drains.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Language Code
---
Physical State
Solid
Physical State Data
solid
State Under Standard Conditions
---
Appearance
White
Colour
---
Colour Intensity
---
Form
---
Odor
Odorless
Odor Threshold
No data available
Ph
14 (5 %)
Melting Point
318 °C / 604.4 °F
Boiling Point
1390 °C / 2534 °F @ 760 mmHg
Flash Point
Not applicable
Freezing Point
---
Softening Point
---
Solidification Point
---
Cloud Point
---
Crystallisation Point
---
Relative Evaporation Rate
---
Evaporation Rate
Not applicable - Solid
Vapor Pressure
1 mmHg @ 739 °C
Vapor Density
Not applicable
Relative Density
---
Bulk Density
---
Density
2.13
Flammability
Not applicable (liquid), No information available (solid,gas)
Upper Explosive Limit
---
Lower Explosive Limit
---
Explosive Limits
---
Auto Ignition Temperature
---
Decomposition Temperature
---
Solubility
---
Partition Coefficient
---
Solubility In Water
Soluble
Solubility In Fat
---
Molecular Weight
40
Voc Content
---
Metal Corrosion
---
Dynamic Viscosity
---
Kinematic Viscosity
---
Properties Status
---
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

Stability

Water reactive, Hygroscopic.

Reactivity

None known, based on information available

Hazardous reactions

None under normal processing. Hazardous Polymerization: No information available.

Avoid

Avoid dust formation. Incompatible products. Excess heat. Exposure to moist air or water.

Incompatible

Water. Metals. Acids.

Decomposition

Carbon monoxide (CO). Carbon dioxide (CO₂). Sodium oxides.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

12.1. Toxicity Ecotoxicity effects

Do not empty into drains. Contains a substance which is:. Harmful to aquatic organisms. The product contains following substances which are hazardous for the environment. | Component | Freshwater Fish | Water Flea | Freshwater Algae | | --- | --- | --- | --- |

The product contains substances hazardous to the environment and is harmful to aquatic organisms.

12.1. Toxicity Ecotoxicity effects

Freshwater Fish: LC50: = 45.4 mg/L, 96h static (Oncorhynchus mykiss) Water Flea: EC50 = 40.4 mg/L, 48h (Daphnia sp.)

12.2 Persistence and degradability

12.3 Bioaccumulative potential

12.4 Mobility in soil

12.5 Results of PBT and vPvB assessment

12.6 Endocrine disrupting properties

12.7 Other adverse effects

12.1. Toxicity Ecotoxicity effects

| Component | Freshwater Fish | Water Flea | Freshwater Algae | | --- | --- | --- | --- | | Sodium carbonate | Lepomis macrochirus: LC50: 300 mg/L/96h Gambusia affinis: LC50: 740 mg/L/96h | EC50: = 265 mg/L, 48h (Daphnia magna) | | | Component | Microtox | M-Factor | | --- | --- | --- |

12.2. Persistence and degradability

Persistence Soluble in water, Persistence is unlikely, based on information available. Degradation in sewage Contains substances known to be hazardous to the environment or not degradable in waste treatment plant water treatment plants.

Persistence is unlikely due to water solubility. The product contains substances that are hazardous to the environment or not degradable in waste treatment plants.

12.3. Bioaccumulative potential

12.3. Bioaccumulative potential

Bioaccumulation is unlikely

Bioaccumulation is unlikely

12.4. Mobility in soil

The product is water soluble, and may spread in water systems. Will likely be mobile in the environment due to its water solubility. Highly mobile in soils

The product is water soluble and highly mobile in soils, with potential to spread in water systems.

12.5. Results of PBT and vPvB assessment

Substance is not considered persistent, bioaccumulative and toxic (PBT) / very persistent and very bioaccumulative (vPvB).

The substance is not considered persistent, bioaccumulative and toxic (PBT) or very persistent and very bioaccumulative (vPvB).

12.6. Endocrine disrupting properties

Endocrine Disruptor Information This product does not contain any known or suspected endocrine disruptors

The product does not contain any known or suspected endocrine disruptors.

12.7. Other adverse effects

Persistent Organic Pollutant This product does not contain any known or suspected substance Ozone Depletion Potential This product does not contain any known or suspected substance
13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

Treatment

Solutions with high pH-value must be neutralized before discharge.

Disposal

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. Chemical waste generators must also consult local, regional, and national hazardous waste regulations to ensure complete and accurate classification. Dispose of in accordance with the European Directives on waste and hazardous waste. Dispose of in accordance with local regulations.

Waste Codes

Not specified According to the European Waste Catalog, Waste Codes are not product specific, but application specific. EWC
14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
UN1823
Shipping Name
SODIUM HYDROXIDE, SOLID
Transport Class
8
Packing Group
II
15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

?

Frequently Asked Questions

Common questions about safety, handling, and properties

What other names is Sodium hydroxide known by?

Sodium hydroxide is also known as: Caustic soda; Lye

What is the hazard signal word for Sodium hydroxide?

The signal word is danger.

What is the physical form of Sodium hydroxide?

Sodium hydroxide is a solid appearing as white . It has odorless odor.

What is Sodium hydroxide used for?

Laboratory chemicals.

What are the hazard statements for Sodium hydroxide?

This substance has 1 hazard statement:

  • H314: Causes severe skin burns and eye damage

What is the melting point of Sodium hydroxide?

The melting point is 318 °C / 604.4 °F and the boiling point is 1390 °C / 2534 °F @ 760 mmHg.