Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
Home > L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone > L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone(50-81-7)

L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone(50-81-7)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Product Identification

Product Name

L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone

Synonyms

3-Oxo-L-gulofuranolactone (enol form)
L-3-Ketothreohexuronic acid lactone
L-Ascorbic acid
L-Xyloascorbic acid
Vitamin C
Vitascorbol

CAS

50-81-7

Formula

C6H8O6

Molecular Weight

176.13

EINECS

200-066-2

RTECS

CI7650000

RTECS Class

Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data

Merck

13,837

Beilstein/Gmelin

84272

Beilstein Reference

5-18-05-00026

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Physical and Chemical Properties

Appearance

White crystals.

Solubility in water

330 g/L

Melting Point

190 - 192

Boiling Point

553

Vapor Pressure

2E-14 (25 C)

Density

1.694 g/cm3 (20 C)

pKa/pKb

4.13 (pKa)

Partition Coefficient

-2.11

Heat Of Vaporization

148.7 kJ/mol

Usage

As antioxidant in foodstuffs, to prevent rancidity, to prevent browning of cut apples & other fruit.

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First Aid Measures

Ingestion

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.

Inhalation

Remove from exposure 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.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.

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.

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Handling and Storage

Storage

Store in a cool, dry, well-ventilated area away from incompatible substances. Do not expose to air. Store protected from light. Store under an inert atmosphere.

Handling

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. Avoid ingestion and inhalation. Use with adequate ventilation. Store protected from light. Handle under an inert atmosphere. Store protected from air.

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Hazards Identification

Ingestion

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.

Inhalation

May cause respiratory tract irritation. Low hazard for usual industrial handling.

Skin

May cause skin irritation. Low hazard for usual industrial handling.

Eyes

May cause eye irritation.

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Exposure Controls/Personal Protection

Personal Protection

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. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

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 a respirator's use.

Poison Class

-

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Fire Fighting Measures

Flash Point

276

Autoignition

380

Fire Fighting

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. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Upper exp. limit

14.5

Lower exp. limit

1.7

Fire Potential

This material is probably combustible.

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Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Carefully scoop up and place into appropriate disposal container. Provide ventilation. Place under an inert atmosphere.

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Stability and Reactivity

Incompatibilities

Oxidizing agents.

Stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

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Transport Information

HS Code

2936 27 00

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ContactMore

Shanghai Shangyao Xinya Pharmaceutical Co., Ltd.
Tel
021-22309200
WebSite
http://www.xinyapharm.com
Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
400-400-6206333
Fax
021-50323701
WebSite
http://www.aladdin-e.com/
Shandong Fengtai Biotechnology Co., Ltd.
Tel
0531-0531-82066716
Fax
0531-82066716
WebSite
http://www.fengtaibio.com/
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
WebSite
https://www.tcichemicals.com/CN/zh/
Hebei chuangzhiyuan biotechnology co., LTD
WebSite
https://www.chemicalbook.com/ShowSupplierProductsList1142995/0.htm