hua zhong hai wei bei jing j...Purity: 99%Lead Time: 3 Day
Zhengzhou JACS Chem Co,LtdPurity: 98%Lead Time: 7 Day
Shanghai Sunwise Chemical Co.,...Purity: 98%Lead Time: 7 Day
Xinxiang Aurora Biotechnology ...Purity: 99%Lead Time: 7 Day
Hubei Zhonglong Kangsheng fine...Purity: 99%Lead Time: 2 Day
|Name:||L-Ascorbic acid Material Safety Data Sheet|
|Synonym:||Ascorbic acid; 3-Keto-L-glucofuranolactone; Vitamin C; L-3-keto-threo-hexuronic acid lactone|
Synonym:Ascorbic acid; 3-Keto-L-glucofuranolactone; Vitamin C; L-3-keto-threo-hexuronic acid lactone
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
Risk Phrases: None Listed.
Section 3 - HAZARDS IDENTIFICATION
Light sensitive.Air sensitive.
Potential Health Effects
May cause eye irritation.
May cause skin irritation. Low hazard for usual industrial handling.
Ingestion of large amounts may cause gastrointestinal irritation.
Low hazard for usual industrial handling. Large doses may cause diarrhea and acidification of the urine which may cause stones in the urinary tract.
May cause respiratory tract irritation. Low hazard for usual industrial handling.
No information found.
Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Never give anything by mouth to an unconscious person. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water. Get medical aid if irritation or symptoms occur.
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Powerful reducing agent.
Use extinguishing media most appropriate for the surrounding fire.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Provide ventilation.
Section 7 - HANDLING and STORAGE
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed.
Use with adequate ventilation. Avoid breathing dust.
Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture. Store protected from light. Store under an inert atmosphere.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 50-81-7: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Wear appropriate protective gloves to prevent skin exposure.
Wear appropriate protective clothing to minimize contact with skin.
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystals
Color: white to yellow
Odor: none reported
pH: 2.1-2.6 (5% soln)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 190 deg C (dec)
Autoignition Temperature: 1220 deg F ( 660.00 deg C)
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 190 deg C
Solubility in water: Soluble.
Specific Gravity/Density: 1.65
Molecular Formula: C6H8O6
Molecular Weight: 176.13
Section 10 - STABILITY AND REACTIVITY
Stable at room temperature in closed containers under normal storage and handling conditions. Stable to air when dry; aqueous solutions are rapidly oxidized by air.
Conditions to Avoid:
Light, dust generation, excess heat, moist air.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
CAS# 50-81-7: CI7650000 LD50/LC50:
CAS# 50-81-7: Oral, mouse: LD50 = 3367 mg/kg; Oral, rat: LD50 = 11900 mg/kg.
Coenzyme for a number of hydroxylation reactions; required for collagen synthesis. Inadequate intake results in deficiency syndromes such as scurvy.
L-Ascorbic acid - Not listed by ACGIH, IARC, or NTP.
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.
Section 14 - TRANSPORT INFORMATION
Shipping Name: Not regulated.
Shipping Name: Not regulated.
Shipping Name: Not regulated.
Section 15 - REGULATORY INFORMATION
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 50-81-7: 0
CAS# 50-81-7 is listed on Canada's DSL List.
CAS# 50-81-7 is not listed on Canada's Ingredient Disclosure List.
CAS# 50-81-7 is listed on the TSCA inventory.
SECTION 16 - ADDITIONAL INFORMATION