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- 7788-99-0Sulfuric acid,chromium(3+) potassium salt (2:1:1), dodecahydrate (8CI,9CI)
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- 7789-02-8Nitric acid,chromium(3+) salt, nonahydrate (8CI,9CI)
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- 7789-10-8Chromic acid (H2Cr2O7),mercury(2+) salt (1:1)
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| Name |
Ammonium chromate |
EINECS | 232-138-4 |
| CAS No. | 7788-98-9 | Density | 1.91 g/mL at 25 °C(lit.) |
| PSA | 81.08000 | LogP | 0.05660 |
| Solubility | Soluble in water: 1 M at 20 °C | Melting Point |
180 °C (dec.) |
| Formula | CrH2O4. 2H3N | Boiling Point | N/A |
| Molecular Weight | 152.10 | Flash Point | N/A |
| Transport Information | UN 1479 5.1/PG 2 | Appearance | Yellow crystals |
| Safety | 53-17-45-60-61 | Risk Codes | 49-8-43-50/53 |
| Molecular Structure |
|
Hazard Symbols |
 O, T, N
|
| Synonyms |
Ammoniumchromate(VI) (6CI);Chromic acid (H2CrO4), diammonium salt (8CI,9CI);Ammoniumchromate;Ammonium chromate ((NH4)2CrO4);Chromic acid ammonium salt;Diammonium chromate;Diammonium chromate ((NH4)2CrO4);Neutral ammoniumchromate; |
Ammonium chromate Chemical Properties
Chemistry informtion about Neutral Ammonium Chromate (CAS NO.7788-98-9) is:
IUPAC Name: Diazanium Dioxido(Dioxo)Chromium
Synonyms: Ammoniumchromate(Vi) ; Chromicacid(H2cro4),Diammoniumsalt ; Chromicacid[H2cro4],Diammoniumsalt ; Diammoniumchromate ; Neutralammoniumchromate ; Ammonium Chromate ; Ammonium Chronate ; Ammoniumdichromate,>99%
Product Categories: Inorganic Chemicals ; Ammonium Salts ; Metal and Ceramic Science ; Salts
MF: CrH8N2O4
MW: 152.07
EINECS: 232-138-4
Melting Point: 180°C (dec.)
Density: 1.91 g/mL at 25 °C(lit.)
Merck: 14,510
Following is the molecular structure of Neutral Ammonium Chromate (CAS NO.7788-98-9) is:
Ammonium chromate Production
Preparation Products is Furfuryl alcohol .And Raw materials are Ammonia --> Chromic acid --> Potassium sulfate --> Potassium chromate --> Ammonium dichromate .
Ammonium chromate Toxicity Data With Reference
| 1. | mmo-sat 35 µg/plate | CRNGDP Carcinogenesis. 9 (1988),611. | ||
| 2. | dnr-esc 25 µg/well | MUREAV Mutation Research. 133 (1984),161. |
Ammonium chromate Consensus Reports
Reported in EPA TSCA Inventory.
Ammonium chromate Safety Profile
Mutation data reported. When heated to decomposition it emits toxic vapors of NH4.
Safty information about Neutral Ammonium Chromate (CAS NO.7788-98-9) :
Hazard Codes:
O
T
N
Risk Statements:
R49:May cause cancer by inhalation.
R8 :Contact with combustible material may cause fire.
R43:May cause sensitization by skin contact.
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements:
S53:Avoid exposure - obtain special instructions before use.
S17:Keep away from combustible material.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S60:This material and its container must be disposed of as hazardous waste.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
53-17-45-60-61
RIDADR UN 1479 5.1/PG 2
WGK Germany: 3
RTECS: GB2880000
HazardClass: 5.1
PackingGroup: III
Ammonium chromate Standards and Recommendations
OSHA PEL: CL 0.1 mg(CrO3)/m3
ACGIH TLV: TWA 0.05 mg(Cr)/m3
NIOSH REL: (Chromium(VI)): TWA 0.001 mg(Cr)/m3
Ammonium chromate Analytical Methods
For occupational chemical analysis use NIOSH: chromium hexavalent 7024.
Ammonium chromate Specification
To protect yourself,you can put on eyeshields, faceshields, full-face particle respirator type N100 (US), gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges .
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