MSDS and NFPA Safety Guides - Hydrochloric Acid (HCl)

Vocabulary-style flashcards covering key MSDS/NFPA safety information for hydrochloric acid (HCl).

Hydrogen chloride (HCl)

The chemical name and formula; in water it forms hydrochloric acid.

Muriatic acid

Common synonym for hydrochloric acid.

Hazards to avoid

Skin or eye contact and inhalation, which can cause irritation or injury.

Personal protective equipment (PPE) for HCl

Splash goggles, lab coat/full suit, gloves; vapor respirator or SCBA; boots as needed to protect against fumes and splashes.

Composition/information on ingredients

Section listing what the chemical contains and the hazards of each component to guide safe handling.

First aid for skin exposure

Flush skin with water for at least 15 minutes, remove contaminated clothing, apply emollient; wash clothing; seek medical attention.

Combustibility of HCl

Not combustible, but corrosive; protect against fumes.

Spill response (neutralization)

If spilled, neutralize with a weak base (e.g., baking soda) and wipe up with plenty of water while wearing PPE.

Ventilation and fume hood use

Work in a well-ventilated area or in a fume hood; wear a lab coat, gloves, and safety goggles.

Boiling point

Approximately 110 °C.

Melting point

Approximately -27 °C.

Solubility and state at room temperature

Dissolves in water; exists as a liquid at room temperature.

Reactivity with other substances

Avoid mixing with strong bases, metals, or oxidizers; keep away from heat and open flames to prevent dangerous reactions or toxic gases.

Toxicity and health effects

Toxic and corrosive; exposure can cause severe skin/eye burns, respiratory irritation, coughing, choking, and digestive tract damage if ingested.

Disposal procedure

Neutralize with a weak base (baking soda), dilute with water, and dispose according to waste guidelines.