Corn Starch or Maize Starch is a polymeric carbohydrate consisting of a large number of glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants as an energy store. It is the most common carbohydrate in human diets and is contained in large amounts in staple foods.
Pure starch is a white, tasteless and odorless powder that is insoluble in cold water or alcohol.
We offer BP USP NF IP grade of Maize Starch or Corn Starch.
DEFINITION
Corn Starch consists of the starch granules separated from the mature grain of corn [Zea mays L. (Fam. Gramineae)].
IDENTIFICATION
A.
Analysis: Examine under a microscope, using a mixture of glycerin and water (1:1) as a mounting agent.
Acceptance criteria: It appears either as angular polyhedral granules of irregular sizes with diameters ranging from 2–23 micro-m, or as rounded or spheroidal granules of irregular sizes with diameters ranging from 25–35 micro-m. The central hilum consists of a distinct cavity or two- to five-rayed cleft, and there are no concentric striations. Between orthogonally oriented polarizing plates or prisms, the starch granules show a distinct black cross intersecting at the hilum.
B.
Sample solution: 20 mg/mL in water
Analysis: Boil for 1 min, and cool.
Acceptance criteria: A thin, cloudy mucilage is formed.
C.
Sample solution: 1 mL of the mucilage obtained in Identification test B
Analysis: Add 0.05 mL of iodine and potassium iodide TS 2 to the Sample solution.
Acceptance criteria: An orange-red to dark blue color is produced, which disappears upon heating.
Residue on Ignition:
Sample: 1.0 g
Acceptance criteria: NMT 0.6%
Limit of Iron:
Acceptance criteria: --- corresponding to a limit of 10 ppm of iron.
Limit of Sulfur Dioxide: To pass the test.
Acceptance criteria: NMT 50 ppm
Limit of Oxidizing Substances:
Acceptance criteria: --- 20 ppm, calculated as H2O2.
Microbial Enumeration Tests and Tests for Specified Microorganisms: The total aerobic microbial count does not exceed 1000 cfu/g; the total combined molds and yeasts count does not exceed 100 cfu/g; and it meets the requirements of the test for the absence of Escherichia coli. Where it is intended for use in preparing Absorbable Dusting Powder, it also meets the requirements of the tests for absence of Staphylococcus aureus and Pseudomonas aeruginosa.
Loss on Drying:
Sample: 1 g
Analysis: Dry the Sample at 130C for 90 min.
Acceptance criteria: NMT 15.0%
pH:
Sample solution: Prepare a slurry by weighing 5.0 g of Corn Starch, transferring to a suitable nonmetallic container, and adding 25.0 mL of freshly boiled and cooled water.
Analysis: Agitate continuously at a moderate rate for 1 min. Stop the agitation and allow to stand for 15 min. Determine the pH to the nearest 0.1 unit.
Acceptance criteria: 4.0–7.0
Packaging and Storage: Preserve in well-closed containers. No storage requirements specified.
Labeling: Where Corn Starch is intended for use in preparing Absorbable Dusting Powder, it is so labeled, and the label states that it must be subjected to further processing during the preparation of Absorbable Dusting Powder.
When Starch is specified and the type is not indicated, Maize Starch, Potato Starch, Rice Starch, Wheat Starch or, in tropical countries where these are not available, Tapioca Starch may be supplied or used.
Action and use: Excipient.
DEFINITION
Maize starch is obtained from the caryopsis of Zea mays L.
CHARACTERS
Appearance: Matt, white to slightly yellowish, very fine powder that creaks when pressed between the fingers.
Solubility: Practically insoluble in cold water and in ethanol (96 per cent). The presence of granules with cracks or irregularities on the edge is exceptional.
IDENTIFICATION
A. Microscope examination, using a 50 per cent V/V solution of glycerol. It appears as either angular polyhedral granules of irregular sizes with diameters ranging from about 2 micro-m to about 23 micro-m or as rounded or spheroidal granules of irregular sizes with diameters ranging from about 25 micro-m to about 35 micro-m. The central hilum consists of a distinct cavity or 2- to 5-rayed cleft and there are no concentric striations. Between orthogonally orientated polarising plates or prisms, the starch granules show a distinct black cross intersecting at the hilum.
B. Suspend 1 g in 50 mL of water, boil for 1 min and cool. A thin, cloudy mucilage is formed.
C. To 1 mL of the mucilage obtained in identification test B add 0.05 mL of iodine solution. An orange-red to dark blue colour is produced, which disappears on heating.
MSDS Sheet, Material Safety Data Sheet
Section 1: Chemical Product and Company Identification
Product Name & Other Names: Starch, Corn Starch, Maize Starch
CAS#: 9005-25-8
EINECS EC Number: 232-679-6
Chemical Name: Starch
Chemical Formula: Not specific.
Relevant uses and uses advised against (if any): Industrial use only.
Supplier: As per letterhead.
Section 2: Hazards Identification
GHS, Globally Harmonized System Classification in accordance with 29 CFR 1910
Classification according to Regulation (EC) No 1272/2008
Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008.
This substance is not classified as dangerous according to Directive 67/548/EEC.
Labeling according to GHS & Regulation (EC) No 1272/2008
| GHS Label Elements NONE |
Signal Word: None
Hazards not otherwise classified (HNOC):
May causes mild skin irritation.
May causes mild eye irritation.
Precautionary statements:
P261: Avoid breathing dust/fume/gas/mist/vapors/spray.
P262: Do not get in eyes, on skin, or on clothing.
P281: Use personal protective equipment as required.
P302+P352 - IF ON SKIN: Wash with plenty of soap and water.
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. Continue rinsing.
P337+313: If eye irritation persists get medical advice/attention.
Section 3: Composition and Information on Ingredients
Product Name & Other Names: Starch, Corn Starch, Maize Starch
CAS#: 9005-25-8
EINECS EC Number: 232-679-6
Section 4: First Aid Measures
Always seek medical attention after first aid measures are provided.
Eye Contact: Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical attention if irritation occurs.
Skin Contact: Wash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation develops.
Inhalation: If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.
Ingestion: Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight clothing such as a collar, tie, belt or waistband.
Section 5: Fire and Explosion Data
Flammability of the Product: May be combustible at high temperature.
Products of Combustion: Toxic fumes and oxides of carbon.
Fire Hazards in Presence of Various Substances: Slightly flammable to flammable in presence of heat.
Risks of explosion of the product in presence of mechanical impact: Not available.
Fire Fighting Media and Instructions: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
SMALL FIRE: Use DRY chemical powder.
LARGE FIRE: Use water spray, fog or foam. Do not use water jet.
Section 6: Accidental Release Measures
Personal precautions, protective equipment and emergency procedures: Avoid breathing dust/fumes/gas/mist/vapors/spray. Ensure adequate ventilation. Use individual protective equipment (waterproof boots, suitable protective clothing, safety glasses, etc.). Restrict unprotected personnel from the area. Prevent any contact with hot surfaces. Do not approach facing the wind. Do not touch the spilled material.
Environmental precautions: Do not let the product enter drains, soil or water sources.
Methods and materials used for containment Cleanup procedures and Storage:
Small Spill: Use appropriate tools to put the spilled Corn Starch, Maize Starch in a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority requirements.
Large Spill: Contain spilled material. Cover with an inert, non-combustible absorbent material. Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and allow to evacuate as per law.
Section 7: Handling and Storage
Precautions for safe handling: Apply according to good manufacturing and industrial hygiene practices. Ensure proper ventilation. Wash thoroughly after handling. Do not drink, eat or smoke while handling. Avoid contact with skin, eyes and clothing. Minimize dust generation. Avoid breathing dust/fumes/gas/mist/vapors/spray. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use individual protective equipment (waterproof boots, suitable protective clothing, safety glasses, etc.). Prevent any contact with hot surfaces.
Conditions for safe storage, including any incompatibilities: Store in cool, dry and ventilated area away from heat sources and protected from sunlight in tightly closed original container. Keep air contact to a minimum. Do not leave the material container open. Store protected from heat, sparks and ignition sources and incompatible materials. Avoid contact with skin and eyes. Avoid inhalation of dust/mist/vapor. Do not store with incompatible materials like oxidizing agents. Ground all equipment containing material. Do not breathe dust. Keep away from incompatibles such as oxidizing agents. Do not store above 23C.
Section 8: Exposure Controls/Personal Protection
Engineering Controls: Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants below the exposure limit.
Personal Protection: Safety glasses. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent. Gloves.
Personal Protection in Case of a Large Spill: Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self-contained breathing apparatus should be used to avoid inhalation of the product.
Exposure Limits:
TWA: 10 (mg/m3) from ACGIH (TLV) [United States] [1999] Inhalation Total.
TWA: 10 (mg/m3) [Canada] Inhalation Total.
TWA: 10 (mg/m3) from NIOSH Inhalation Total.
TWA: 5 (mg/m3) from NIOSH Inhalation Respirable.
TWA: 15 (mg/m3) from OSHA (PEL) [United States] Inhalation Total.
TWA: 5 (mg/m3) from OSHA (PEL) [United States] Inhalation Respirable. Consult local authorities for acceptable exposure limits.
Section 9: Physical and Chemical Properties
Physical state and appearance: Corn Starch, Maize Starch is solid.
Odor: Not available.
Odor threshold: Not available.
Taste: Slight Sweet.
pH: Not available.
Relative density: 1.5
Melting Point: Decomposes.
Initial boiling point and boiling range: Not available.
Flash point: Not available.
Auto-ignition temperature: Not available.
Decomposition temperature: Not available.
Upper/lower flammability or explosive limits: Not available.
Vapor pressure: Not available.
Vapor density: Not available.
Evaporation rate: Not available.
Flammability (solid, gas): Not available.
Partition coefficient: n-octanol/water: Not available.
Solubility: Insoluble in cold water, hot water.
Viscosity: Not available.
Section 10: Stability and Reactivity Data
Stability: Stable under proper storage condition.
Instability Temperature: Not available.
Conditions of Instability: Excess heat, incompatible materials.
Incompatibility with various substances: Reactive with oxidizing agents.
Special Remarks on Reactivity: Toxic fumes and oxides of carbon forms on decomposition.
Polymerization: Will not occur.
Section 11: Toxicological Information
Toxicity to Animals:
LD50 Intraperitoneal - Mouse - 6,600 mg/kg
LC50: Not available.
Carcinogenicity: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC, ACGIH, NTP and OSHA.
Mutagenic Effects: Not available.
Developmental Toxicity: Not available.
Reproductive Effects: No information available.
Section 12: Ecological Information
Ecotoxicity: Not available.
BOD5 and COD: Not available.
Products of Biodegradation: Possibly hazardous short-term degradation products are not likely. However, long term degradation products may arise.
Persistence and Degradability: It will degrade.
Mobility: No information available.
Bioaccumulation/ Accumulation: Not likely to accumulate.
Results of PBT and vPvB assessment: No data available for assessment.
Section 13: Disposal Considerations
Waste Disposal: Waste must be disposed of in accordance with environmental control regulations.
Section 14: Transport Information
DOT (USA) & ADR/RID: Not dangerous goods
IMDG: Not dangerous goods
IATA: Not dangerous goods.
Section 15: Other Regulatory Information
USA:
SARA 302: No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313: This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.
SARA 311/312 Hazards: No SARA Hazards
California Proposition 65 Carcinogens and Reproductive Toxins: None of the ingredients are listed
DISCLAIMER: The information and recommendations set forth herein (hereinafter "Information") are presented in good faith and believed correct as of the date hereof. It is compiled from various sources and it is not necessarily all inclusive nor fully adequate in every circumstance. In addition, these suggestions should not be confused with nor followed in violation of applicable laws, regulations, rules or insurance requirements applicable. This MSDS sheet is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose.
