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Substance Name: Potassium dichromate
RN: 7778-50-9
UNII: T4423S18FM
InChIKey: KMUONIBRACKNSN-UHFFFAOYSA-N
Note
- Chromic acid (H2Cr2O7), dipotassium salt. A compound having bright orange-red crystals and used in dyeing, staining, tanning leather, as bleach, oxidizer, depolarizer for dry cells, etc. Medically it has been used externally as an astringent, antiseptic, and caustic. When taken internally, it is a corrosive poison.
Molecular Formulas
- Cr2-H2-O7.2K
- Cr2-O7.2K
Molecular Weight
- 294.181
- All
- Classifications
- Links to Resources
- Names & Synonyms
- Registry Numbers
- Formulas
- Structure Descriptors
- Toxicity
Classification Codes
Classification Codes
- Caustics
- Coloring Agents
- Human Data
- Mutation Data
- Noxae
- Reproductive Effect
- TSCA Flag R (Subject to the TSCA Section 6 Risk Management Rule)
- Tumor Data
Superlist Classification Codes
- Known to be a Carcinogen
- Reportable Quantity (RQ) = 10 lb
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Names and Synonyms
Name of Substance
- Potassium dichromate
- Potassium dichromate(VI)
MeSH Heading
- Potassium dichromate
Synonyms
- Bichromate of potash
- Caswell No. 690
- CCRIS 2409
- Chromium potassium oxide (K2Cr2O7)
- Dichromic acid dipotassium salt
- Dipotassium bichromate
- Dipotassium dichromate
- Dipotassium dichromium heptaoxide
- EC 231-906-6
- EINECS 231-906-6
- EPA Pesticide Chemical Code 068302
- HSDB 1238
- Iopezite
- Kalium bichromicum
- Kaliumdichromat
- Kaliumdichromat [German]
- NSC 77372
- Potassium bichromate
- Potassium chromate (K2Cr2O7)
- Potassium dichromate
- Potassium dichromate (K2(Cr2O7))
- Potassium dichromate (K2Cr2O7)
- Potassium dichromate(VI)
- SRM 935a
- UNII-T4423S18FM
Systematic Names
- Chromic acid (H2Cr2O7), dipotassium salt
- Chromic acid (H2Cr2O7), potassium salt (1:2)
- Dichromic acid (H2Cr2O7), dipotassium salt
- Dichromic acid, dipotassium salt
- Potassium dichromate
Superlist Names
- Chromic acid, dipotassium salt
- Potassium bichromate
- Potassium dichromate
- Potassium dichromate [Chromium and chromium compounds]
Registry Numbers
CAS Registry Number
- 7778-50-9
FDA UNII
- T4423S18FM
System Generated Number
- 0007778509
Molecular Formulas
Molecular Formulas
- Cr2-H2-O7.2K
- Cr2-O7.2K
Molecular Formula Fragments
- COMPONENT
- Cr2-H2-O7
- Cr2-O7
- K
Structure Descriptors
InChI
InChI=1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1InChIKey
KMUONIBRACKNSN-UHFFFAOYSA-NSmiles
[K+].[K+].[O-][Cr](=O)Toxicity
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
child | LDLo | oral | 26mg/kg (26mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION GASTROINTESTINAL: NAUSEA OR VOMITING | Zeitschrift fuer Kinderheilkunde. Vol. 81, Pg. 417, 1958. |
child | LDLo | oral | 50mg/kg (50mg/kg) | Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 40, Pg. 2677, 1998. | |
dog | LDLo | oral | 2829mg/kg (2829mg/kg) | Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975. | |
dog | LDLo | unreported | 2300ug/kg (2.3mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 27(12), Pg. 77, 1962. | |
guinea pig | LDLo | oral | 163mg/kg (163mg/kg) | Zeitschrift fuer Kinderheilkunde. Vol. 81, Pg. 417, 1958. | |
guinea pig | LDLo | subcutaneous | 29400ug/kg (29.4mg/kg) | Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975. | |
man | LDLo | oral | 143mg/kg (143mg/kg) | VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION LUNGS, THORAX, OR RESPIRATION: DYSPNEA KIDNEY, URETER, AND BLADDER: URINE VOLUME DECREASED | Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 40, Pg. 2677, 1998. |
monkey | LDLo | subcutaneous | 40mg/kg (40mg/kg) | KIDNEY, URETER, AND BLADDER: "CHANGES IN TUBULES (INCLUDING ACUTE RENAL FAILURE, ACUTE TUBULAR NECROSIS)" | American Journal of Pathology. Vol. 9, Pg. 133, 1933. |
mouse | LD50 | intraperitoneal | 37mg/kg (37mg/kg) | Carcinogenesis Vol. 4, Pg. 1535, 1983. | |
mouse | LD50 | oral | 190mg/kg (190mg/kg) | Sangyo Igaku. Japanese Journal of Industrial Health. Vol. 20, Pg. 590, 1978. | |
mouse | LDLo | subcutaneous | 100mg/kg (100mg/kg) | Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975. | |
rabbit | LD50 | skin | 14mg/kg (14mg/kg) | LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | National Technical Information Service. Vol. OTS0537040, |
rabbit | LDLo | intravenous | 27900ug/kg (27.9mg/kg) | Environmental Quality and Safety, Supplement. Vol. 1, Pg. 1, 1975. | |
rabbit | LDLo | subcutaneous | 10mg/kg (10mg/kg) | KIDNEY, URETER, AND BLADDER: "CHANGES IN TUBULES (INCLUDING ACUTE RENAL FAILURE, ACUTE TUBULAR NECROSIS)" KIDNEY, URETER, AND BLADDER: INTERSTITIAL NEPHRITIS | Proceedings of the Society for Experimental Biology and Medicine. Vol. 9, Pg. 13, 1911. |
rat | LD50 | intraperitoneal | 28mg/kg (28mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. (5), Pg. 30, 1997. | |
rat | LD50 | oral | 25mg/kg (25mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE BEHAVIORAL: ATAXIA | National Technical Information Service. Vol. OTS0545929, |