Chemical Name
CAS-Number

Colour/Form

Boiling Point (ºC)

Melting Point (ºC)

Molecular Weight (g/mol)

Solubility In Water

Relative Density (water=1)

Relative Vapour Density
(air=1)

Vapour Pressure/ (Kpa)

Inflam. Limits

Flash Point (ºC)

Auto Ignition Point (ºC)

BORIC ACID
10043-35-3

colourless, transparent crystals or white granules or powder

300

169

61.84

1 g/18 ml

@ 15 ºC

CARBONIC ACID
2582-30-1

63.03

sol

CHLOROSULPHURIC ACID
7790-94-5

colourless or slightly yellow liquid

@ 755 mm Hg

-80

116.53

1.753

4.02

@ 32 ºC

FLUOROSULPHURIC ACID
7789-21-1

colourless liquid; reddish-brown colour with acetone

163

-89

100.07

@ 25 ºC/4 ºC

HYDROCHLORIC ACID
7647-01-0

colourless liquid

-85

-114

36.46

82.3 g/100 ml

@ 15 ºC/4 ºC

1.3

HYDROFLUOBORIC ACID
16872-11-0

colourless liquid

130

87.82

misc

1.84

NITRIC ACID
7697-37-2

transparent colourless or yellowish liquid

83

-42

63.01

sol

@ 25 ºC/4 ºC

2-3

6.4

PERCHLORIC ACID
7601-90-3

colourless, oily liquid

@ 11 mm Hg

-112

100.47

misc

@ 22 ºC

PHOSPHORIC ACID
7664-38-2

unstable orthorhombic crystals or clear syrupy liquid; at 20 deg C, the 50 and 75% strengths are mobile liquids, the 85% is of a syrupy consistency, while the 100% acid is in the form of crystals; viscous, colourless, odorless liquid

213

42.4

98.00

v sol

3.4

4.0

SILICIC ACID
7699-41-4

jelly-like precipitate obtained when sodium silicate solution is acified during drying jelly is converted to a white amorphous powder.

SULPHAMIC ACID
5329-14-6

orthorhombic crystals; white crystalline solid

205

97.10

sol

2.15

SULPHURIC ACID
7664-93-9

clear, colourless, oily liquid when pure but brownish in hue when impure

290

10.4

98.08

sol

1.841

3.4

0.13