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HYDROCHLORIC
ACID
|
|
PRODUCT
IDENTIFICATION
|
| CAS
NO. |
7647-01-0 |
|
| EINECS
NO. |
231-595-7 |
| FORMULA |
HCl |
| MOL
WT. |
36.46 |
|
H.S.
CODE
|
2086.10 |
| TOXICITY |
Oral
rat LD50: 90 ml/kg |
| SYNONYMS |
Anhydrous
hydrogen chloride; Spirits of salt; |
| Hydrochloric
acid, Anhydrous; Basilin; Chlorohydric acid; Hydrochloride;
Muriatic acid; Acide chlorhydrique; Acido cloridrico;
Chloorwaterstof; Chlorowodor; Chlorwasserstoff; |
| SMILES |
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|
CLASSIFICATION
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HYDROCHLORIC
ACID is a solution of the gas hydrogen chloride
(HCI) in water. It varies from colourless
to pale yellow according to purity. At
all strengths above 10%, the acid typically
evolves hydrogen chloride vapour with its characteristic
sharp irritant odour. The amount of vapour
is primarily dependent on the acids strength,
but other factors such as turbulence and temperature
also have an effect. In addition the vapour
may manifest itself as acid fume depending on
the relative humidity. Hydrochloric acid is
highly corrosive and attacks most common metals,
including iron, steel and lead liberating the
flammable gas hydrogen. It will also destroy
many common clothing materials. At a strength
of 20.4% HCI, the acid forms an azeotropic constant
boiling mixture with a boiling point of 110
degrees centigrade.
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|
PHYSICAL
AND CHEMICAL PROPERTIES (30%0
|
| PHYSICAL
STATE |
clear
to pale yellow liquid |
| MELTING
POINT |
-70
C
|
| BOILING
POINT |
110
C
|
| SPECIFIC
GRAVITY |
1.18
- 1.19 |
| SOLUBILITY
IN WATER |
Miscible |
| pH |
|
| VAPOR
DENSITY |
1.26 |
|
AUTOIGNITION
|
|
|
NAPA
RATINGS
|
Health:
3 Flammability: 0 Reactivity: 1 |
|
REFRACTIVE
INDEX
|
|
| FLASH
POINT |
|
| STABILITY |
Stable
under ordinary conditions |
|
APPLICATIONS
|
|
Hydrochloric acid is the second only to sulphuric acid in its numerous and
diverse uses in manufacturing industry and synthetic chemistry including brine
treatment for chloralkali, steel pickling, food, calcium chloride, oil well
acidulation, chlorine, swimming pools, metal recovery , pH control, sludge
removal, sand and clay purification, production sodium chlorate, metal
chlorides, activated carbon andiron oxide pigments, polycarbonate resins,
bisphenol-A, polyvinyl chloride resins and synthetic glycerine. |
| SALES
SPECIFICATION |
| 30%
GRADE |
|
APPEARANCE
|
clear
to pale yellow liquid |
|
ACIDITY
(as HCl)
|
31.0%
min
|
| FREE
Chlorine |
10ppm
max |
| SULFITE |
5
ppm max |
| SULFATE |
100ppm
max |
| IRON |
5ppm
max |
|
HEAVY
METAL
|
5ppm
max
|
| RESIDUE
ON IGNITION |
|
| TRANSPORTATION |
| PACKING |
|
| HAZARD
CLASS |
8
(Packing Group: II) |
| UN
NO. |
1789
|
| OTHER
INFORMATION |
Hazard Symbols: C, Risk Phrases: 34, Safety
Phrases: 26-45
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