Chemical Safety Guide: Calcium Chloride, Dichloromethane, MTBE, Sodium Carbonate | Study notes Chemistry

Experiment 5

Extraction of Crude Caffeine from Tea using Liquid-Liquid Extraction

Safety Data Sheet

General Guide for the Proper Laboratory Attire:

1. Always wear a face shield or face mask large enough to protect your ears and neck as well as

your face when dealing with chemicals.

2. Wear gloves when handling chemicals. Select the glove material based on compatibility with

the chemicals you may contact.

3. Wear appropriate protective work clothing that protects your body from chemical exposure.

4. Put-on protective goggles for eye protection.

5. Use chemicals only as directed and for their intended purpose.

Chemical

Compound

Properties

Hazards

First-aid Measures or other

Measures Needed

Anhydrous

calcium

chloride

• Calcium chloride

is found as an

odorless white

powder, granules

or flakes. It has a

density of 2.15

g/mL, melting

point of 782 °C

and a high boiling

point over 1600

°C.

• CaCl2 is highly

water soluble,

hygroscopic and

deliquescent).

Calcium chloride

dissolves in water

in a very

exothermic

manner.

• Calcium chloride

is not toxic in

normal amounts

and is used in

foods. However,

its main hazard is

due to its

desiccating

• Eye: Contact with eyes

may cause severe

irritation, and possible

eye burns.

• Skin: Contact with skin

causes irritation and

possible burns, especially

if the skin is wet or

moist.

• Ingestion: May cause

severe gastrointestinal

tract irritation with

nausea, vomiting and

possible burns. May

cause cardiac

disturbances. May be

harmful if swallowed. In

very severe cases,

seizures, rapid

respiration, slow

heartbeat, or death.

• Inhalation: May cause

severe irritation of the

upper respiratory tract

with pain, burns, and

inflammation.

• Chronic: Effects may be

delayed.

• Eye: Immediately flush eyes

with plenty of water for at

least 15 minutes, occasionally

lifting the upper and lower

eyelids. Get medical aid.

• Skin: Get medical aid.

Immediately flush skin with

plenty of water for at least 15

minutes while removing

contaminated clothing and

shoes. Wash clothing before

reuse.

• Ingestion: Do not induce

vomiting. If victim is

conscious and alert, give 2-4

cupful of milk or water. Never

give anything by mouth to an

unconscious person. Get

medical aid.

• Inhalation: Remove from

exposure and move to fresh

air immediately. If not

breathing, give artificial

respiration. If breathing is

difficult, give oxygen. Get

medical aid.

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Download Chemical Safety Guide: Calcium Chloride, Dichloromethane, MTBE, Sodium Carbonate and more Study notes Chemistry in PDF only on Docsity!

Experiment 5

Extraction of Crude Caffeine from Tea using Liquid-Liquid Extraction

Safety Data Sheet

General Guide for the Proper Laboratory Attire:

Always wear a face shield or face mask large enough to protect your ears and neck as well as your face when dealing with chemicals.
Wear gloves when handling chemicals. Select the glove material based on compatibility with the chemicals you may contact.
Wear appropriate protective work clothing that protects your body from chemical exposure.
Put-on protective goggles for eye protection.
Use chemicals only as directed and for their intended purpose. Chemical Compound

Properties Hazards First-aid Measures or other

Measures Needed

Anhydrous calcium chloride

Calcium chloride is found as an odorless white powder, granules or flakes. It has a density of 2. g/mL, melting point of 782 °C and a high boiling point over 1600 °C.
CaCl 2 is highly water soluble, hygroscopic and deliquescent). Calcium chloride dissolves in water in a very exothermic manner.
Calcium chloride is not toxic in normal amounts and is used in foods. However, its main hazard is due to its desiccating - Eye: Contact with eyes may cause severe irritation, and possible eye burns. - Skin: Contact with skin causes irritation and possible burns, especially if the skin is wet or moist. - Ingestion: May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause cardiac disturbances. May be harmful if swallowed. In very severe cases, seizures, rapid respiration, slow heartbeat, or death. - Inhalation: May cause severe irritation of the upper respiratory tract with pain, burns, and inflammation. - Chronic: Effects may be delayed. - Eye: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. - Skin: Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. - Ingestion: Do not induce vomiting. If victim is conscious and alert, give 2- 4 cupful of milk or water. Never give anything by mouth to an unconscious person. Get medical aid. - Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

(drying) property and exothermic reaction when it dissolves in water.

Hydrophilite, antarcticite (hexahydrate). White, melts without decomposition. Blurs on air because of vigorous absorption of moisture. It is readily soluble in water (without hydrolysis). Decomposes by concentrated sulfuric acid. Participates in exchange reactions. - Notes to Physician: Treat symptomatically and supportively. - Extinguishing Media: Use extinguishing media most appropriate for the surrounding fire. - Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Dichlorometh

ane (DCM)

Dichloromethane appears as a colorless liquid with a sweet, penetrating, ether-like odor. Noncombustible by if exposed to high temperatures may emit toxic chloride fum es. Vapors are narcotic in high concentrations. Used as a solvent and paint remover.
Boiling point of 40 °C and Melting point at - 95.1°C - Inhalation - can cause coughing, wheezing and/or shortness of breath. Higher levels of dichloromethane inhalation can lead to headache, mental confusion, nausea, vomiting, dizziness and fatigue. Causes central nervous system depression: Continued or high exposures by inhalation will cause anesthetic effects. This may result in a loss of consciousness and could prove fatal: Causes formation of carbon monoxide in the blood. Carbon monoxide may cause adverse effects on the cardiovascular Inhalation: Remove victim to fresh air and keep at rest in a position comfortable for breathing Ingestion: Clean mouth with water and drink afterwards plenty of water. Skin: Wash with plenty of soap and water. If skin irritation occurs: Get medical advice/attention Take off contaminated clothing and wash before reuse. Eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. Suitable Extinguishing Media: Water spray, carbon dioxide

leading to unpleasant taste and odor in water. MTBE is a blending component of gasoline, used as an oxygenate to raise the octane number and to replace tetraethyl lead (TEL).

Its use is controversial in some parts of the world, such as the U.S., because of contamination of groundwater, which was followed by legislation favoring ethanol. However, worldwide production of MTBE has been constant owing to growth in Asian markets. effects similar to those for inhalation exposure. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal. May cause unconsciousness. May cause central nervous system effects. May cause headache, nausea, fatigue, and dizziness.
Chronic: May cause cancer according to animal studies. Repeated inhalation may cause nasal and tracheal inflammation. Chronic exposure may cause liver damage. Adverse reproductive effects have been reported in animals. MTBE has been reported to induce lymphomas, leukemias, and testicular tumors in rats exposed by the oral route. It has induced liver tumors in mice by the inhalation route, while kidney tumors occurred in rats.
Extremely flammable liquid and vapor: Vapor may cause flash fire. Causes eye, skin, and respiratory tract irritation. Aspiration hazard if swallowed. Can enter lungs and cause damage. May cause central nervous system depression. container tightly closed Store locked up
Disposal: Dispose of contents/container to an approved waste disposal plant Hazards not otherwise classified (HNOC) Sodium Carbonate
At room temperatur e, sodium carbonate
Inhalation: Breathing in sodium carbonate could irritate your lungs or worsen conditions such
Inhalation: Move to fresh air. Get medical attention if symptoms occur. If not

(Na2CO3) is an odorless, grayish white powder which is hygroscopic. This means when it is exposed to air, it can spontaneously absorb water molecules.

Sodium carbonate has a melting point of 1,564°F (851°C), a density of 2. g/cm3, and is soluble in water.
There are generally two ways for the production of sodium carbonate. One is through the reactions between sodium chloride and calcium carbonate (via the ammonia soda (Solvay) process). The other is from sodium carbonate and hydrogen carbonate ores (trona and nahcolite). as acute or chronic asthma or another chronic pulmonary disease. Inhalation could irritate your nose, throat or respiratory tract. If sodium carbonate is inhaled, get plenty of fresh air. If you’re with someone who’s inhaled sodium carbonate and they’re not breathing, you may need to perform artificial respiration. Seek medical attention if you or someone else is having trouble breathing after inhalation.
Swallowing: If sodium carbonate is swallowed, especially in a large amount, call for medical help immediately. Sodium carbonate can burn your mouth, throat, stomach or esophagus, and vomiting, nausea or diarrhea could result. If swallowed, drink two or more glasses of water or milk. While you shouldn’t induce vomiting, if vomiting does occur, drink extra fluids afterwards. Don’t drink carbonated beverages or any acids. If someone has swallowed sodium carbonate and he is unconscious, do not attempt to give him fluids.
Skin: Your skin could become irritated after breathing, give artificial respiration.
Ingestion: Do not induce vomiting. Get medical attention if symptoms occur.
Eye Contact: Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Get medical attention if symptoms occur.
Skin Contact: Wash off immediately with plenty of water for at least 15 minutes. Get medical attention if symptoms occur.

References:

Dichloromethane Methylene Chloride. (2017, January 26). Retrieved from https://safetyservices.ucdavis.edu/safetynet/guidelines-handling-dichloromethane-methylene- chloride Brennan, J. (2019, March 2). Toxicity of Household Bleach. Retrieved from https://sciencing.com/toxicity-household-bleach-21461.html Calcium chloride. (n.d.). Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Calcium-chloride Calcium chloride Formula - Calcium chloride Uses, Properties, Structure and Formula. (n.d.). Retrieved from http://softschools.com/formulas/chemistry/calcium_chloride_uses_properties_structure_formula/ 296/ Dichloromethane. (n.d.). Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Dichloromethane#section=ICSC-Number Dichloromethane (Methylene Chloride) Hazards & Safety Information. (2017, September 18). Retrieved from https://www.msdsonline.com/2015/02/20/dichloromethane-methylene-chloride-hazards- safety-information/ Everything Calcium Chloride. (n.d.). Retrieved from https://www.oxycalciumchloride.com/about- us/everything-calcium-chloride Methyl tert-butyl ether. (n.d.). Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Methyl- tert-butyl-ether Properties of Calcium Chloride. (n.d.). Retrieved from https://www.peterschemical.com/properties-of- calcium-chloride/

Sodium carbonate. (n.d.). Retrieved from https://www.chemicalbook.com/ChemicalProductProperty_EN_CB9853672.htm Sodium Carbonate - Properties Of Sodium Carbonate. (n.d.). Retrieved from https://science.jrank.org/pages/6232/Sodium-Carbonate-Properties-sodium-carbonate.html Sodium Carbonate Safety Tips. (2015, June 17). Retrieved from https://www.msdsonline.com/2015/06/17/sodium-carbonate-safety-tips/ Tert Butyl Methyl Ether. (n.d.). Retrieved from https://www.sciencedirect.com/topics/medicine-and- dentistry/tert-butyl-methyl-ether

Chemical Safety Guide: Calcium Chloride, Dichloromethane, MTBE, Sodium Carbonate, Study notes of Chemistry

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Partial preview of the text

Download Chemical Safety Guide: Calcium Chloride, Dichloromethane, MTBE, Sodium Carbonate and more Study notes Chemistry in PDF only on Docsity!

Experiment 5

Extraction of Crude Caffeine from Tea using Liquid-Liquid Extraction

Safety Data Sheet

General Guide for the Proper Laboratory Attire:

Properties Hazards First-aid Measures or other

Measures Needed

ane (DCM)

References: