| Chemical |
Sodium dichromate |
| CAS-number : |
10588-01-9 |
| |
| Synonyms : |
| chromic acid, disodiumsalt. |
| natriumdikromaatti |
| Sodium bichromate |
| |
| Sumformula of the chemical : |
| Na2Cr2O7 |
| |
| Uses : |
Colorimetry (Copper determination), complexing agent, oxidation
inhibitor in ethyl ether.
|
| |
| State and appearance : |
Red or red-orange deliquescent crystals.
|
| |
| Melting point, °C : |
| 357 |
|
| |
| Degradation point, °C : |
| 400 |
|
| |
| Other physicochemical properties : |
Soluble in water, insoluble in alcohol.
Noncombustible.
|
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 50 |
orl-rat, Sax & Lewis 1989 |
| |
| LDLo values to mammals in non-oral exposure , mg/kg : |
| 80 |
scu-rat, Sax & Lewis 1989 |
| 26.2 |
ivn-mus |
| 18.4 |
ivn-rbt |
| 335 |
ipr-gpg |
| 23 |
scu-gpg |
| |
| Health effects : |
A toxic material (Sax & Lewis 1987).
Poison by ingestion, skin contact, intravenous,
intraperitoneal, and subcutaneous routes.
An experimental
tumorigen.
Chromate salts are considered to be carcinogens.
Human mutagenic data.
A caustic and irritant (Sax & Lewis 1989).
|
| |
| Mutagenicity : |
mma, sat, 0.030 mg/plate; cyt, hmn, lym, 0.002 mmol/l; dnd,
rat, lvr, 3 mmol/l; sce, ham, lng, 0.035 mg/l (Sax & Lewis
1989).
|
| |
| Effects on amphibia : |
LDLo, ivn-frg, 196 mg/kg (Sax & Lewis 1989).
|
| |
| Effects on microorganisms : |
Toxicity threshold (cell multiplication inhibition test):
bacteria (Pseudomonas putida): 0.78 mg/l
(Bringmann & Kühn 1980a)
|
| |
| Other information of water organisms : |
Toxicity threshold (cell multiplication inhibition test):
green algae (Scenedesmus quadricauda): 1.2 mg/l
protozoa (Entosiphon sulcatum): 20 mg/l
(Bringmann & Kühn 1980a)
|
References |
| 188 | Bringmann, G. & Kühn, R. 1980a.
Comparison of the toxicity
thresholds of water pollutants to bacteria, algae and
protozoa in the cell multiplication inhibition test.
Water
Res. 14: 231 - 241. |
| 2522 | Sax, N.I. & Lewis, R.J.Sr. 1987.
Hawley's condensed chemical
dictionary.
Eleventh edition.
Van Nostrand Reinhold Company.
New York. pp. 1288. |
| 2723 | Sax, N.I. & Lewis, Sr., R.J. 1989.
Dangerous properties of
industrial materials.
Seventh edition.
Van Nostrand Reinhold.
New York. |
