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Sodium dichromate dihydrate

Sodium dichromate dihydrate
Sodium dichromate dihydrate
CAS No.
7789-12-0
Chemical Name:
Sodium dichromate dihydrate
Synonyms
SODIUM BICHROMATE;SODIUM DICHROMATE;SODIUM DICHROMATE GR;Sodium dichromate di;SODIUM DICHROMATE 2H2O;SODIUM DICHROMATE, ACS;Sodiumbichromateanhydrous;SODIUM DICHROMATE, HYDROUS;SODIUM DICHROMATE DIHYDRATE;SODIUM DICHROMATE-2-HYDRATE
CBNumber:
CB2206099
Molecular Formula:
Cr2H4Na2O9
Formula Weight:
298
MOL File:
7789-12-0.mol

Sodium dichromate dihydrate Properties

Melting point:
91 °C(lit.)
Boiling point:
400°C
Density 
2,348 g/cm3
form 
Solid
color 
Red-orange
Water Solubility 
730 g/L (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,8609
CAS DataBase Reference
7789-12-0(CAS DataBase Reference)
EPA Substance Registry System
Chromic acid (H2Cr2O7), disodium salt, dihydrate(7789-12-0)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  O,T+,N
Risk Statements  45-46-60-61-8-21-25-26-34-42/43-48/23-50/53
Safety Statements  53-45-60-61
RIDADR  UN 3086 6.1/PG 1
WGK Germany  3
RTECS  HX7750000
TSCA  Yes
HazardClass  5.1
PackingGroup  III
HS Code  28413000
Symbol(GHS):
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H272 May intensify fire; oxidizer Oxidising liquids;Oxidising solids Category 2
Category 3
Danger
Warning
P210, P220, P221P280, P370+P378,P501
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501
H340 May cause genetic defects Germ cell mutagenicity Category 1A, 1B Danger
H350 May cause cancer Carcinogenicity Category 1A, 1B Danger
H360 May damage fertility or the unborn child Reproductive toxicity Category 1A, 1B Danger
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P221 Take any precaution to avoid mixing with combustibles/…
P320 Specific treatment is urgent (see … on this label).
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Sodium dichromate dihydrate price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Alfa Aesar 12611 Sodium dichromate dihydrate, Reagent Grade 7789-12-0 100g $26.2 2017-11-08 Buy
Alfa Aesar 12611 Sodium dichromate dihydrate, Reagent Grade 7789-12-0 2kg $251 2017-11-08 Buy
Alfa Aesar 36692 Sodium dichromate dihydrate, ACS, 99.5-100.5% 7789-12-0 2kg $329 2017-11-08 Buy
Alfa Aesar L14890 Sodium dichromate dihydrate, 99% 7789-12-0 100g $17.6 2017-11-08 Buy
Alfa Aesar 36692 Sodium dichromate dihydrate, ACS, 99.5-100.5% 7789-12-0 100g $39.9 2017-11-08 Buy

Sodium dichromate dihydrate Chemical Properties,Uses,Production

Chemical Properties

Orange crystals or needles

Uses

It is used in preparation of titrant in redox titrations.

General Description

Solid orange-yellow crystal or powder.

Air & Water Reactions

Water soluble (hot water).

Reactivity Profile

Sodium dichromate dihydrate can react with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers). The products may themselves be capable of further reactions (such as combustion in the air). Reactions may be rapid but often requires initiation (heat, spark, catalyst, addition of a solvent). Can react violently with active metals, cyanides, esters, and thiocyanates.

Health Hazard

INHALATION: Corrosive to mucous membranes continuous exposure may lead to perforation of nasal septum. EYES: Conjunctivitis and lacrimation. SKIN: Corrosive producing deep penetrating ulcers to exposed area. Slow to heal. INGESTION: Has a harsh metallic taste. May cause vertigo, thirst, abdominal pain, vomiting, shock, convulsions and coma.

Sodium dichromate dihydrate Preparation Products And Raw materials

Raw materials

Preparation Products


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