1.Identification
1.1 GHS Product identifier
Product name | potassium dichromate |
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1.2 Other means of identification
Product number | - |
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Other names | dipotassium,oxido-(oxido(dioxo)chromio)oxy-dioxochromium |
1.3 Recommended use of the chemical and restrictions on use
Identified uses | For industry use only. |
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Uses advised against | no data available |
1.4 Supplier's details
1.5 Emergency phone number
Emergency phone number | - |
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Service hours | Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours). |
2.Hazard identification
2.1 Classification of the substance or mixture
Oxidizing solids, Category 2
Acute toxicity - Oral, Category 3
Acute toxicity - Dermal, Category 4
Skin corrosion, Category 1B
Skin sensitization, Category 1
Acute toxicity - Inhalation, Category 2
Respiratory sensitization, Category 1
Germ cell mutagenicity, Category 1B
Carcinogenicity, Category 1B
Specific target organ toxicity – repeated exposure, Category 1
Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1
Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 1
Reproductive toxicity, Category 1B
2.2 GHS label elements, including precautionary statements
Pictogram(s) | |
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Signal word | Danger |
Hazard statement(s) | H272 May intensify fire; oxidizer H301 Toxic if swallowed H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H330 Fatal if inhaled H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H340 May cause genetic defects H350 May cause cancer H372 Causes damage to organs through prolonged or repeated exposure H410 Very toxic to aquatic life with long lasting effects H360FD |
Precautionary statement(s) | |
Prevention | P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P220 Keep away from clothing and other combustible materials. P280 Wear protective gloves/protective clothing/eye protection/face protection. P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P271 Use only outdoors or in a well-ventilated area. P284 [In case of inadequate ventilation] wear respiratory protection. P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P273 Avoid release to the environment. |
Response | P370+P378 In case of fire: Use ... to extinguish. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER/doctor/… P321 Specific treatment (see ... on this label). P330 Rinse mouth. P302+P352 IF ON SKIN: Wash with plenty of water/... P312 Call a POISON CENTER/doctor/…if you feel unwell. P362+P364 Take off contaminated clothing and wash it before reuse. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P310 Immediately call a POISON CENTER/doctor/… P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P333+P313 If skin irritation or rash occurs: Get medical advice/attention. P320 Specific treatment is urgent (see ... on this label). P342+P311 If experiencing respiratory symptoms: Call a POISON CENTER/doctor/... P308+P313 IF exposed or concerned: Get medical advice/ attention. P314 Get medical advice/attention if you feel unwell. P391 Collect spillage. |
Storage | P405 Store locked up. P403+P233 Store in a well-ventilated place. Keep container tightly closed. |
Disposal | P501 Dispose of contents/container to ... |
2.3 Other hazards which do not result in classification
none
3.Composition/information on ingredients
3.1 Substances
Chemical name | Common names and synonyms | CAS number | EC number | Concentration |
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potassium dichromate | potassium dichromate | 7778-50-9 | none | 100% |
4.First-aid measures
4.1 Description of necessary first-aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
In case of skin contact
First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention .
In case of eye contact
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
If swallowed
Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .
4.2 Most important symptoms/effects, acute and delayed
Highly corrosive to skin and mucous membranes. If ingested, causes violent gastroenteritis, peripheral vascular collapse, vertigo, muscle cramps, coma, and (later) toxic nephritis with glycosuria. Allergic reactions may also occur. (USCG, 1999)
4.3 Indication of immediate medical attention and special treatment needed, if necessary
Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Inorganic Acids and Related Compounds/
5.Fire-fighting measures
5.1 Extinguishing media
Suitable extinguishing media
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
5.2 Specific hazards arising from the chemical
Behavior in Fire: May decompose, generating oxygen. Supports the combustion of other materials. (USCG, 1999)
5.3 Special protective actions for fire-fighters
Wear self-contained breathing apparatus for firefighting if necessary.
6.Accidental release measures
6.1 Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.
6.2 Environmental precautions
Personal protection: complete protective clothing including self-contained breathing apparatus. Sweep spilled substance into covered non-combustible containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT absorb in saw-dust or other combustible absorbents. Do NOT let this chemical enter the environment.
6.3 Methods and materials for containment and cleaning up
ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Wear respiratory protection. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust; Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided; Methods and materials for containment and cleaning up: Sweep up and shovel. Contain spillage, and then collect with an electrically protected vacuum cleaner or by wetbrushing and place in container for disposal according to local regulations. Keep in suitable, closed containers for disposal.
7.Handling and storage
7.1 Precautions for safe handling
Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Provision to contain effluent from fire extinguishing. Separated from combustible substances, reducing agents and food and feedstuffs. Well closed. Store in an area without drain or sewer access.Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Oxidizing hazardous materials
8.Exposure controls/personal protection
8.1 Control parameters
Occupational Exposure limit values
Recommended Exposure Limit: 8-hour Time-Weighted Average: 0.5 mg Cr/cu m. /Chromium metal, chromium(II) and chromium(III) compounds/
Recommended Exposure Limit: 8-hour Time-Weighted Average: 0.0002 mg Cr(VI)/cu m. NIOSH considers all Cr(VI) compounds (including chromic acid, tert-butyl chromate, zinc chromate, and chromyl chloride) to be potential occupational carcinogens. /All hexavalent chromium (Cr(VI) compounds/
NIOSH usually recommends that occupational exposures to carcinogens be limited to the lowest feasible concentration. /Chromic acid and chromates/
Biological limit values
no data available
8.2 Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.
8.3 Individual protection measures, such as personal protective equipment (PPE)
Eye/face protection
Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
Respiratory protection
Wear dust mask when handling large quantities.
Thermal hazards
no data available
9.Physical and chemical properties
Physical state | almost colorless liquid. |
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Colour | Orange-red triclinic crystals |
Odour | Odorless, no distinctive odor |
Melting point/ freezing point | 398oC |
Boiling point or initial boiling point and boiling range | 500oC |
Flammability | Not combustible but enhances combustion of other substances. |
Lower and upper explosion limit / flammability limit | no data available |
Flash point | 10°C |
Auto-ignition temperature | Not flammable (USCG, 1999) |
Decomposition temperature | 500°C |
pH | Acid reaction: a 1% aqueous solution has pH of 4.04 and a 10% solution has a pH of 3.57 |
Kinematic viscosity | no data available |
Solubility | 10 to 50 mg/mL at 20°C |
Partition coefficient n-octanol/water (log value) | no data available |
Vapour pressure | no data available |
Density and/or relative density | 2.676 |
Relative vapour density | no data available |
Particle characteristics | no data available |
10.Stability and reactivity
10.1 Reactivity
no data available
10.2 Chemical stability
Stable under recommended storage conditions.
10.3 Possibility of hazardous reactions
Dangerous fire risk in contact with organic materials.Potassium or sodium dichromate reacts explosively with hydrazine [Mellor 11:234. 1946-47]. A drop of anhydrous hydroxylamine on powdered potassium dichromate produces a violent explosion [Mellor 8:293. 1946-47].
10.4 Conditions to avoid
no data available
10.5 Incompatible materials
Incompatible materials: Organic materials. Do not store near acids. Powdered metals, hydrazine.
10.6 Hazardous decomposition products
When heated to decomposition it emits toxic fumes of /potassium oxide/.
11.Toxicological information
Acute toxicity
- Oral: LD50 Mouse oral 190 mg/kg
- Inhalation: no data available
- Dermal: no data available
Skin corrosion/irritation
no data available
Serious eye damage/irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
Cancer Classification: Not Likely to be Carcinogenic to Humans
Reproductive toxicity
no data available
STOT-single exposure
no data available
STOT-repeated exposure
no data available
Aspiration hazard
no data available
12.Ecological information
12.1 Toxicity
- Toxicity to fish: LC50; Species: Pimephales promelas (fathead minnow); Concentration: 17,300 ug/L as chromium for 11 days, water hardness of 220 mg/L as calcium carbonate /Conditions of bioassay not specified in source examined
- Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (Water Flea) age <24 hr, neonate; Conditions: freshwater, static, 20°C; Concentration: 1050 ug/L for 24 hr (95% confidence interval: 970-1130 ug/L); Effect: intoxication, immobilization
- Toxicity to algae: EC50; Species: Microcystis aeruginosa (Blue-Green Algae) exponential growth phase, nonaxenic, 2x10+6 cells/mL; Conditions: freshwater, static, 21°C, pH 7.9; Concentration: 211 ug/L for 7 days (95% confidence interval: 269-1506 ug/L); Effect: population, increased Chlorophyll A concentration />99.8% purity
- Toxicity to microorganisms: no data available
12.2 Persistence and degradability
no data available
12.3 Bioaccumulative potential
Using potassium dichromate as the source for chromium, a BCF of 2.8 (based on chromium) was determined for the muscle tissue of Salmo gairdneri (rainbow trout) over a 180 days duration period(1). According to a classification scheme(2), this BCF range suggests that bioconcentration in aquatic organisms is low(SRC).
12.4 Mobility in soil
no data available
12.5 Other adverse effects
no data available
13.Disposal considerations
13.1 Disposal methods
Product
The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.
Contaminated packaging
Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.
14.Transport information
14.1 UN Number
ADR/RID: UN3086 | IMDG: UN3086 | IATA: UN3086 |
14.2 UN Proper Shipping Name
ADR/RID: TOXIC SOLID, OXIDIZING, N.O.S. |
IMDG: TOXIC SOLID, OXIDIZING, N.O.S. |
IATA: TOXIC SOLID, OXIDIZING, N.O.S. |
14.3 Transport hazard class(es)
ADR/RID: 9 | IMDG: 9 | IATA: 9 |
14.4 Packing group, if applicable
ADR/RID: Not dangerous goods. | IMDG: Not dangerous goods. | IATA: Not dangerous goods. |
14.5 Environmental hazards
ADR/RID: yes | IMDG: yes | IATA: yes |
14.6 Special precautions for user
no data available
14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
no data available
15.Regulatory information
15.1 Safety, health and environmental regulations specific for the product in question
Chemical name | Common names and synonyms | CAS number | EC number |
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potassium dichromate | potassium dichromate | 7778-50-9 | none |
European Inventory of Existing Commercial Chemical Substances (EINECS) | Listed. | ||
EC Inventory | Listed. | ||
United States Toxic Substances Control Act (TSCA) Inventory | Listed. | ||
China Catalog of Hazardous chemicals 2015 | Listed. | ||
New Zealand Inventory of Chemicals (NZIoC) | Listed. | ||
Philippines Inventory of Chemicals and Chemical Substances (PICCS) | Listed. | ||
Vietnam National Chemical Inventory | Listed. | ||
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) | Listed. |
16.Other information
Information on revision
Creation Date | Aug 16, 2017 |
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Revision Date | Aug 16, 2017 |
Abbreviations and acronyms
- CAS: Chemical Abstracts Service
- ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
- RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
- IMDG: International Maritime Dangerous Goods
- IATA: International Air Transportation Association
- TWA: Time Weighted Average
- STEL: Short term exposure limit
- LC50: Lethal Concentration 50%
- LD50: Lethal Dose 50%
- EC50: Effective Concentration 50%
References
- IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
- HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
- IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
- eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
- CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
- ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
- ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
- Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
- ECHA - European Chemicals Agency, website: https://echa.europa.eu/