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Sulfuric acid																				Related Pages
Synonyms & Trade Names
			Battery acid, Hydrogen sulfate, Oil of vitriol, Sulfuric acid (aqueous)
CAS No.
			7664-93-9
	RTECS No.
			WS5600000
	DOT ID & Guide
			1830 1371831 137(fuming)1832 137(spent)

FormulaH2SO4
	Conversion
	IDLH
			15 mg/m3See: 7664939

Exposure Limits
			NIOSH RELTWA 1 mg/m3OSHA PEL TWA 1 mg/m3
	Measurement Methods
			**NIOSH** 7903;**OSHA** ID113 , ID165SG
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to dark-brown, oily, odorless liquid.
					[Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]													
										
Molecular Weight98.1	
	Boiling Point554°F
	Freezing Point51°F
	SolubilityMiscible
	Vapor Pressure0.001 mmHg
	Ionization Potential?											
Specific Gravity1.84 (96-98% acid)	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
Noncombustible Liquid, but capable of igniting finely divided combustible materials.
Incompatibilities & Reactivities
			Organic materials, chlorates, carbides, fulminates, water, powdered metals
					[Note: Reacts violently with water with evolution of heat. Corrosive to metals.]
Exposure Routes
			inhalation, ingestion, skin and/or eye contact
Symptoms
			irritation eyes, skin, nose, throat; pulmonary edema, bronchitis; emphysema; conjunctivitis; stomatis; dental erosion; eye, skin burns; dermatitis
Target Organs
			Eyes, skin, respiratory system, teeth
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact
							**Eyes:**Prevent eye contact
							**Wash skin:**When contaminated
							**Remove:**When wet or contaminated
							**Change:**No recommendation
							**Provide:**Eyewash (>1%), Quick drench (>1%)
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Water flush immediately
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH/OSHA****Up to 15 mg/m3**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£(APF = 25) Any powered, air-purifying respirator with acid gas cartridge(s) in combination with a high-efficiency particulate filter£(APF = 50) Any chemical cartridge respirator with a full facepiece and acid gas cartridge(s) in combination with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.(APF = 50) Any self-contained breathing apparatus with a full facepiece(APF = 50) Any supplied-air respirator with a full facepiece**Emergency or planned entry into unknown concentrations or IDLH conditions:** (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus**Escape:** (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted acid gas canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.Any appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0362
					  MEDICAL TESTS: 0218

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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