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Chemical news Specification Of Sulphuric Acid


PRODUCT IDENTIFICATION
CAS NO. 7664-93-9
EINECS NO. 231-639-5
FORMULA H2SO4
MOL WT. 98.08
H.S. CODE 2807.00
TOXICITY Oral rat LD50: 2140 mg/kg
SYNONYMS
Oil Of Vitriol; Babcock Acid; Sulphuric Acid; Battery AcidAcide Sulfurique (French); Acido Solforico (Italian); Acido Sulfurico (Spanish); Dihydrogen Sulfate; Dipping Acid; Electrolyte Acid; Hydrogen Sulfate; Mattling Acid; Schwefelsaeureloesungen; Spirit Of Sulfur; Zwavelzuuroplossingen
   
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Colorless (pure) to dark brown, oily, dense liquid with acrid odor.
MELTING POINT 3 C (100%), -32 C (93%), -38 C (78%), -64 C (65%)
BOILING POINT ca. 290C (decomposes at 340 C)
SPECIFIC GRAVITY 1.84
SOLUBILITY IN WATER Miscible, liberates much heat
pH 1 N solution (ca. 5% w/w) = 0.3; 0.1 N solution (ca. 0.5% w/w) = 1.2; 0.01 N solution (ca. 0.05% w/w) = 2.1
VAPOR DENSITY 3.4
NFPA RATINGS Health: 3 Flammability: 0 Reactivity: 2 Other: Water reactive
STABILITY Stable under ordinary conditions
   
SALES SPECIFICATION
70% , 93%, 96%, 98% SULFURIC ACID
H2SO4 70.0±1 % or  93.0 % min or 96.0±1 % or 98.0% min
FREE SO2 0.01% max
Fe 0.01% max
OLEUM
FREE  SO3 25%
ASH 0.05% max
Fe 0.03% max
LIQUID SO3
SO3 (DRY BASIS) 99.9% min
MOISTURE 0.01% max
ASH 0.05% max
Fe 0.03% max
SULFURIC ACID MONOHYDRATE
CONTENT 99-101 wt.%
   

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