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Hydrochloric Acid. A Presentation by Carmen Omota. Physical and Chemical Properties. Appearance: colorless, fuming liquid Odor: pungent odor Boiling point: 53C (127F) Melting point: -74C (-101F). Solubility: infinite in water with slight

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slide1

Hydrochloric Acid

A Presentation by Carmen Omota

Carmen Omota

slide2

Physical and Chemical Properties

Appearance:

colorless, fuming liquid

Odor:

pungent odor

Boiling point:

53C (127F)

Melting point:

-74C (-101F)

Solubility:

infinite in water with slight

evolution of heat

Vapor pressure:

190 mm Hg @ 25C (77F)

Density:

1.18 (water = 1)

Carmen Omota

slide3

Hazards

Health Rating: 3 – Severe (poison)

Flammability Rating: O - None

Reactivity Rating: 2 - Moderate

Contact Rating: 3 – Severe (Corrosive)

Lab Protective Equipment: goggles & shield; lab coat & apron;

vent hood; proper gloves

Storage Color Code : white (corrosive)

Carmen Omota

slide4

Potential Health Effects

Inhalation: Corrosive! Inhalation of vapors can cause coughing,

choking, inflammation of the nose, throat, and upper

respiratory tract, and in severe cases … DEATH!

Ingestion: Corrosive! Swallowing HCL can cause immediate pain

and burns of the mouth, throat, esophagus and

gastrointestinal tract. May cause nausea, vomiting, and

diarrhea (ewww!)

Skin Contact: Can cause redness, pain, and severe skin burns.

Concentrated solutions cause deep ulcers and discolor skin.

Carmen Omota

slide5

Potential Health Effects (continued)

Eye Contact: Vapors are irritating and may cause damage to

the eyes. Contact may cause severe burns and permanent

eye damage.

Chronic Exposure: Long – term exposure to concentrated

vapors may cause erosion of teeth. Long – term exposures

seldom occur due to the corrosive properties of the acid.

Carmen Omota

slide6

Stability and Reactivity

Stability: stable under ordinary conditions of use and storage.

Hazardous Decomposition Products:

when heated to decomposition, it emits toxic hydrogen

chloride fumes and will react with water or steam to

produce heat and toxic and corrosive fumes.

Incompatibilities: A strong mineral acid, concentrated HCl is

incompatible with many substances and highly reactive

with strong bases, metals, metal oxides, hydroxides, amines,

carbonates, and other alkaline materials. It is also

incompatible with materials such as cyanides, sulfites,

sulfides, and formaldehyde.

Conditions to avoid: heat and direct sunlight.

Carmen Omota

slide7

Handling and Storage

Store in a cool, dry, ventilated storage area with acid resistant

floors, and good drainage.

Protect from physical damage.

Do not wash out container and use it for other purposes.

When diluting, the acid should always be added slowly to

water, and only in small amounts.

Never use hot water and never add water to the acid. Water

added to acid can cause uncontrolled boiling and splashing.

Observe all warnings and precautions listed for the product!!!

Carmen Omota

slide8

Ecological Information

Environmental Fate:

When released into the soil, this material is NOT expected

to biodegrade. When released into the soil, this material

may leach into groundwater.

Environmental Toxicity:

This material is expected to be toxic to the aquatic life.

Carmen Omota

slide9

Disposal Considerations

Whatever cannot be saved for recovery or recycling should be handled as hazardous waste and sent to a

R C R A approved waste facility.

Carmen Omota

slide10

HCl Recovery System

Technology Description:

Although HCl acid recovery technology exists for large scale manufacturers, no cost-effective method had been developed

for galvanizers and small – to medium – steel plants until

Beta developed its new system between 1989 and 1994.

The new HCl recovery recycles used acid solution from the

pickling process. Without recycling, waste HCl solution is

disposed of by injection into deep wells or the acid is

neutralized and the waste is then transported to a disposal

site. With the new recovery system, acid is pumped through a

prefilter to an evaporator where it is heated until the water

and acid vaporize, leaving only concentrated iron

chloride that is recuperated.

The water /acid vapor is condensed into HCl, reconcentrated, and pumped

to the pickling tanks.

The acid is recovered, the water reused, [] product is sold at a profit.

Carmen Omota

slide12

Technology Benefits

The acid recovery system delivers significant savings. Currently,

a typical small – to medium – size steel manufacturing plant

spends $14 / ton to clean its products. With Beta’s recovery

system, manufacturers can slash that cost to just $3.40 / ton.

More over, acid recovery requires minimal labor, and the life

expectancy of a recovery system exceeds that of a conventional

acid neutralization system by at least 3 yrs.

The recovery system also saves energy by eliminating the acid –

neutralization step and the need to transport and dispose of

waste.

Carmen Omota

slide13

Yo Quiero HCl

Carmen Omota

slide14

THE END

Carmen Omota