CAS Number: 121-43-7
Product Catalog

93-0531

Boron › Trimethylborate, 98%

Stability: moisture sensitive

Safety: Hazardous

Physical Characteristics: melting point -29°C, boiling point 68.7°C, flash point 30°F, density 0.915

Please log in or choose your country below to view prices.

SECTION 1: Product Identification
Chemical Name:	Trimethylborate, 98%
Product Number:	93-0531
CAS Registry Number:	121-43-7
Formula:	B(OCH3)3
EINECS Number:	204-468-9
Chemical Family:	organic or inorganic borate
Synonym:	Trimethoxyboron

SECTION 2: Composition and Information on Ingredients
Ingredient	CAS Number	Percent	ACGIH (TWA)	OSHA (PEL)
Title Compound	121-43-7	100	no data	no data

SECTION 3: Hazards Identification
Emergency Overview:	Flammable liquid and vapor. Inhalation may cause dizziness and headache. Irritating to eyes, skin and mucous membranes. Harmful in contact with skin. Ingestion may cause nausea and vomiting.
Primary Routes of Exposure:	Eye, skin and inhalation
Eye Contact:	Causes mild irritation of the eyes.
Skin Contact:	Causes slight to mild irritation of the skin. Prolonged contact may dry the skin and lead to rashes or more severe irritation.
Inhalation:	Irritating to the nose, mucous membranes and respiratory tract. Can cause dizziness, headaches, nausea and impaired coordination.
Ingestion:	Irritating to mouth throat and stomach. May cause dizziness, nausea, vomiting, pain and stomach upset.
Acute Health Effects:	Irritation to skin, eyes and mucous membranes. More severe effects (ingestion and inhalation) are dizziness, nausea, vomiting. Harmful in contact with skin.
Chronic Health Effects:	No information available on long term chromic effects.
NTP:	No
IARC:	No
OSHA:	No

SECTION 4: First Aid Measures
Eye Exposure:	Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim will need assistance in keeping their eye lids open. Get immediate medical attention.
Skin Exposure:	Wash the affected area immediately with water. Remove contaminated clothing if necessary. Seek medical assistance if irritation persists.
Inhalation:	Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Ingestion:	Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce vomiting if directed by medical personnel.

SECTION 5: Fire Fighting Measures
Flash Point:	30F
Autoignition Temperature:	not determined
Explosion Limits:	not determined
Extinguishing Medium:	dry chemical, carbon dioxide, water spray or foam.
Special Fire Fighting Procedures:	Fire fighters should be equipped with a NIOSH-approved positive pressure self-contained breathing and full protective clothing.
Hazardous Combustion and Decomposion Products:	carbon dioxide, carbon monoxide, soot, boron oxide particulate.
Unusual Fire or Explosion Hazards:	Flammable liquid. No unusual fire or explosion hazards.

SECTION 6: Accidental Release Measures
Spill and Leak Procedures:	Small spills can be absorbed into vermiculite or other suitable adsorbent. Larger spills must be contained in order to avoid contamination of the soil, sewers systems or bodies of water. Eliminate all potential ignition sources. Absorb the material into clay, sawdust or other suitable adsorbent.

SECTION 7: Handling and Storage
Handling and Storage:	Store in a cool, dry, well-ventilated area away from heat and direct sunlight. Keep containers tightly sealed. This product will react with atmospheric moisture and chemically degrade. Transfer material under an inert atmosphere of nitrogen argon or very dry air. Do not use heat, sparks, open flames, or torches on empty containers.

SECTION 8: Exposure Controls and Personal Protection
Eye Protection:	Always wear safety glasses. If pouring or transferring this substance wear a face shield for additional protection.
Skin Protection:	Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.
Ventilation:	Work with this product in a well-ventilated area, preferably a fume hood.
Respirator:	If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134
Additional Protection:	No additional protection required.

SECTION 9: Physical and Chemical Properties
Color and Form:	colorless liq.
Molecular Weight:	103.92
Melting Point:	-29
Boiling Point:	68.7
Vapor Pressure:	no data
Specific Gravity:	0.915
Odor:
Solubility in Water:	Decomposes in water

SECTION 10: Stability and Reactivity
Stability:	moisture sensitive
Hazardous Polymerization:	no hazardous polymerization
Conditions to Avoid:	high temperatures, contact with water, strong acids
Incompatibility:	Oxidizing agents and water
Decomposition Products:	carbon dioxide, carbon monoxide, boron oxide and organic fumes.

SECTION 11: Toxicological Information
RTECS Data:	Administration into the eye (rabbit); Standard Draize Test: 500mg. Oral (rat); LD50: 6140mg/kg. Intraperitoneal (rat); LDLo: 1600mg/kg. Oral (mouse); LD50: 1290mg/kg. Intraperitoneal (mouse); LDLo: 1gm/kg. Administration onto the skin (rabbit); LD50: 1980uL/kg. Intraperitoneal (rabbit); LDLo: 1600mg/kg.
Carcinogenic Effects:	No data
Mutagenic Effects:	No data
Tetratogenic Effects:	No data

SECTION 12: Ecological Information
Ecological Information:	No information available

SECTION 13: Disposal Considerations
Disposal:	Dispose of according to local, state and federal regulations. For purposes of shipping waste material see the section 14 in this document on transportation.

SECTION 14: Transportation
Shipping Name (CFR):	Trimethyl borate
Hazard Class (CFR):	3
Additional Hazard Class (CFR):	NA
Packaging Group (CFR):	II
UN ID Number (CFR):	UN# 2416
Shipping Name (IATA):	Trimethyl borate
Hazard Class (IATA):	3
Additional Hazard Class (IATA):	NA
Packaging Group (IATA):	II
UN ID Number (IATA):	UN# 2416

SECTION 15: Regulatory Information
TSCA:	listed on the TSCA inventory
SARA (Title 313):	not regulated by Title 313
Second Ingredient:	none
Third Ingredient:	none

SECTION 16: Other Information
Disclaimer:	The information herein is believed to be accurate and reliable as of the date compiled. However, Strem Chemicals, Inc. makes no representation, warranty, or guarantee of any kind with respect to the information contained in this document or any use of the product based on this information.
Preparation Date:	11/11/2003
Revision Date:	8/03/2011